When rocks lay the groundwork for the origin of life: Mineral catalysts found in deep-sea vents convert CO2 and H2 to biomolecules, showing striking parallels to known biological pathways.
One of the hallmarks of cancer is cell immortality.Researchers now have developed a promising molecular tool that targets and inhibits one of cell immortality's underlying gears: the enzyme telomerase.
With a small zap of electricity, biomedical engineers at Michigan Technological University take an underwater smart glue prototype from sticky to not in seven seconds.
Visceral fat delivers signal to the brain that hurts cognition
Excessive weight around our middle gives our brain's resident immune cells heavy exposure to a signal that turns them against us, setting in motion a crescendo of inflammation that damages cognition, according to new research.
Anti-evolution drug could stop antibiotic resistance
The spread of antibiotic resistance is partly due to the ability of bacteria to pick up DNA from their surroundings. A new study, which started at the University of Groningen, showed that drugs blocking this ability (which is called 'competence') in the bacterium Streptococcus pneumoniae can indeed stop the spread of resistance in mice. As competence is blocked without affecting cell growth, it will be difficult for the bacteria to evolve resistance to the blockade. The study was published online by the journal Cell Host & Microbe on 3 March.
n order to pick up these resistance genes, a chain of events is needed that brings the bacteria in a state called 'competence.' During competence, bacteria express all the machinery required to 'catch' and incorporate the resistance genes into their own genomes.
Growth stress: Researchers figured out how to stop the cells from becoming competent.
In this assay, 1366 approved drugs were screened. It turned out that 46 of them blocked the induction of competence, without negatively affecting growth.
"When cells are under growth stress, for instance in the presence of antibiotics, they try to find a solution and become resistant to these drugs," explains Domenech. "Importantly, we did not observe resistance to the drugs found here as they do not cause growth stress." The 46 drugs could be divided into two groups: drugs affecting ion homeostasis, and antipsychotics. Several candidates were selected for further exploration. "This showed that they all acted through the same mechanism," says Domenech. They disrupted the proton-motive force: the electrochemical gradient that moves protons across the bacterial membrane and powers various processes.
It's like you have a hand again: In a major advance in mind-controlled prosthetics for amputees, researchers have tapped faint, latent signals from arm nerves and amplified them to enable real-time, intuitive, finger-level control of a robotic hand.
Tropical forests' carbon sink is already rapidly weakening
The ability of the world's tropical forests to remove carbon from the atmosphere is decreasing, according to a study tracking 300,000 trees over 30 years, published today in Nature.
The global scientific collaboration, led by the University of Leeds, reveals that a feared switch of the world's undisturbed tropical forests from a carbon sink to acarbon sourcehas begun.
Intact tropical forests are well-known as a crucial global carbon sink, slowingclimate changeby removing carbon from the atmosphere and storing it in trees, a process known ascarbon sequestration. Climate models typically predict that this tropical forest carbon sink will continue for decades.
However, the new analysis of three decades of tree growth and death from 565 undisturbed tropical forests across Africa and the Amazon has found that the overall uptake of carbon into Earth's intact tropical forests peaked in the 1990s.
By the 2010s, on average, the ability of a tropical forest to absorb carbon had dropped by one-third. The switch is largely driven by carbon losses from trees dying.
The study by almost 100 institutions provides the first large-scale evidence that carbon uptake by the world's tropical forests has already started a worrying downward trend.
Poisoning cases mar India’s bid to be a global pesticides hub
Engineers have created a tabletop device that combines a robot, artificial intelligence and near-infrared and ultrasound imaging to draw blood or insert catheters to deliver fluids and drugs.
Scorpions make a fluorescent compound that could help protect them from parasites
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Excessive weight around our middle gives our brain's resident immune cells heavy exposure to a signal that turns them against us, setting in motion a crescendo of inflammation that damages cognition, according to new research.
Why men (and other male animals) die younger: It's all in the Y chromosome
According to popular theory, men live shorter lives than women because they take bigger risks, have more dangerous jobs, drink and smoke more, and are poor at seeking advice from doctors.
But research by scientists at UNSW Sydney suggests the real reason may be less related to human behaviour and more to do with the type ofsex chromosomeswe share with most animalspecies.
In a study published today inBiology Letters, researchers from UNSW Science's School of Biological, Earth and Environmental Sciences analysed all available academic literature on sex chromosomes and lifespan—and they tried to establish whether there was a pattern of one sex outliving the other that was repeated across the animal kingdom.
Unguarded X hypothesis
Specifically, they wanted to test the 'unguarded X hypothesis' which suggests that the Y chromosome in heterogametic sexes—those with XY (male) sex chromosomes rather than XX (female) sex chromosomes—is less able to protect an individual from harmful genes expressed on the X chromosome. The hypothesis suggests that, as the Y chromosome is smaller than the X chromosome, and in some cases absent, it is unable to 'hide' an X chromosome that carries harmful mutations, which may later expose the individual to health threats.
Conversely, there is no such problem in a pair of homogametic chromosomes (XX), where a healthy X chromosome can stand in for another X that has deleterious genes to ensure those harmful genes aren't expressed, thus maximising the length of life for the organism.
First author on the paper and Ph.D. student Zoe Xirocostas says that after examining the lifespan data available on a wide range ofanimal species, it appears that the unguarded X hypothesis stacks up. This is the first time that scientists have tested the hypothesis across the board in animal taxonomy; previously it was tested only within a few groups of animals.
"We looked at lifespan data in not just primates, other mammals and birds, but also reptiles, fish, amphibians, arachnids, cockroaches, grasshoppers, beetles, butterflies and moths among others," she says.
"And we found that across that broad range of species, the heterogametic sex does tend to die earlier than the homogametic sex, and it's 17.6 percent earlier on average."
A mechanism that plants can use to dissipate excess sunlight as heat: excess energy is transferred from chlorophyll, the pigment that gives leaves their green color, to other pigments called carotenoids, which can then release the energy as heat.
International study completes the largest genetic map of psychiatric disorders so far
International study completes the largest genetic map of psychiatric disorders so far: autism, ADHD, schizophrenia, bipolar disorder, depression, obsessive-compulsive disorder and Tourette syndrome were covered
A new study suggests there are key differences between the compositions of Earth and its natural satellite, with significant implications for lunar history
Don’t blame the messenger — unless it’s all stats and no story
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Landmark Computer Science Proof Cascades Through Physics and Math
Computer scientists established a new boundary on computationally verifiable knowledge. In doing so, they solved major open problems in quantum mechanics and pure mathematics.
Fruit fly study suggests neither nature nor nurture is responsible for individuality. Researchers found evidence that neither nature nor nurture leads to personality differences—it is the result of nonheritable noise during brain development.
More information: Gerit Arne Linneweber et al. A neurodevelopmental origin of behavioral individuality in the Drosophila visual system, Science (2020). DOI: 10.1126/science.aaw7182
Economic shock waves from the coronavirus outbreak have curbed carbon pollution from China and beyond, but hopes for climate benefits from the slowdown are likely to be dashed quickly, experts say.
Making choices becomes a lot easier when we haveheuristics, or simple rules of thumb. One example is thefive-a-day rule, which encourages people to eat five portions of fruit and vegetables each day. It's much easier to follow than weighing and adding up your daily intake of different fruits and vegetables to see if you've consumed the necessary amount in grams.
Popularising simple rules of thumb—like replace red meat and dairy with plant-based products—helps people skip the stupefying step of computing the complex carbon footprint of every single meal they eat. They allow people to make fast and effective decisions about what to eat.
If you want to reduce the climate impact of our food choices, try to replacered meatand dairy with plant-based products more often, and avoid products that are flown in or grown in a greenhouse. These choices would be good for the climate, with the added bonus of beinggood for your health.
Even concerned consumers don't know which food choices have the lowest climate impact
The energy used to grow, process, package and transport food accounts for about a quarter of global greenhouse gas emissions. But not all food is equally carbon-intensive. Researchers can measure the impact of different food choices at each stage of their journey—from farm to fork—to work out their carbon footprint.
For one,corporate sustainability campaignstend to shift responsibility onto consumers by focusing on reusing and recycling packaging. This has the obvious appeal of presenting no risk to a company's bottom line. Although reducing the amount of plastic packaging that ends up in landfill is important, it's unlikely to make much difference to climate change.
What should we do when the organic vegetables are wrapped in plastic and non-organic ones aren't? Or when the milk-based yogurt pot is decorated with a landscape of happy cows wandering free in lush fields, while the plainly packaged soy yogurt conjures images of the Amazon burning to ashes? What about when the fresh bananas arrive from Ecuador but the local Scottish strawberries are kept in the freezer? Whether it's plastic packaging versusorganic produce, animal welfare versus deforestation, or travel miles versus energy consumption, there is a lot to consider.
Another cause for confusion might be the nature of advice given by climate experts. Often, the climate impact of food choices is presented in terms of grams of greenhouse gas emissions.
We found that people were confused when they were asked "how manygramsof greenhouse gas emissions could be saved by growing 1 kg of produce organically instead of conventionally?", or "packing 1 kg of produce into a paper bag instead of plastic"? They were less confused and could answer more accurately when asked the same questions about thepercentageof the greenhouse gas emissions that could be saved.
New fix heals herniated discs: A new two-step technique to repair herniated discs uses hyaluronic acid gel to re-inflate the disc and collagen gel to seal the hole, essentially repairing ruptured discs like you'd repair a flat tire.
Researchers at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have identified a new mechanism that helps animals to develop with precise and constant form.
A new mechanism that helps animals to develop with precise and constant form.
New nano strategy fights superbugs: It's not enough to take antibiotic-resistant bacteria out of wastewater to eliminate the risks they pose to society. The bits they leave behind have to be destroyed as well.
Researchers at Rice University's Brown School of Engineering have a new strategy for "trapping and zapping" antibiotic resistant genes, the pieces of bacteria that, even though theirs hosts are dead, can find their way into and boost the resistance of other bacteria.
The team led by Rice environmental engineer Pedro Alvarez is using molecular-imprinted graphitic carbon nitride nanosheets to absorb and degrade these genetic remnants in sewage system wastewater before they have the chance to invade and infect other bacteria.
The researchers targeted plasmid-encoded antibiotic-resistant genes (ARG) coding for New Delhi metallo-beta-lactamase 1 (NDM1), known to resist multiple drugs. When mixed in solution with the ARGs and exposed to ultraviolet light, the treated nanosheets proved 37 times better at destroying the genes than graphitic carbon nitride alone. "Unfortunately, some superbugs resist chlorination, and resistant bacteria that die release extracellular ARGs that get stabilized by clay in receiving environments and transform indigenous bacteria, becoming resistome reservoirs. "In this paper, we discuss a trap-and-zap strategy to destroy extracellular ARGs. Our strategy is to use molecularly imprinted coatings that enhance selectivity and minimize interference by background organic compounds."
Molecular imprinting is like making a lock that attracts a key, not unlike natural enzymes with binding sites that only fit molecules of the right shape. For this project, graphitic carbon nitride molecules are the lock, or photocatalyst, customized to absorb and then destroy NDM1.
Tests show new coronavirus lives on some surfaces for up to three days
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Heat and light create new biocompatible microparticles:
Heat & light create new biocompatible microparticles. Biomedical engineers have devised a method that is safe for living tissues that will allow them to create new shapes attractive for drug delivery, diagnostics and tissue engineering.
Fast-charging damages electric car batteries: Commercial fast-charging stations subject electric car batteries to high temperatures and high resistance that can cause them to crack, leak, and lose their storage capacity
Hero proteins are here to save other proteins: Researchers have discovered a new group of proteins, remarkable for their unusual shape and abilities to protect against protein clumps associated with neurodegenerative diseases
Using Raman microspectroscopy to rapidly detect disease-causing bacteria
Researchers at the Indian Institute of Science (IISc) have developed a method to rapidly identify and check whether a disease-causing bacterium is alive or dead.
'Natural killer' cells could halt Parkinson's progression: Researchers have found that "natural killer" white blood cells could guard against the cascade of cellular changes that lead to Parkinson's disease and help stop its progression.
Why gigantic locust swarms are challenging governments and researchers Scientists are championing biopesticides and better monitoring — but heavy rains, war and a lack of funding have been hampering efforts to control the big outbreak
Did you think and say women can't do 'dangerous research' like men do? Say that again after reading this story and looking at the picture of this scientist working
while there may be great promise for analysing our gut microbiome to help diagnose and treat people in the future, for the moment knowing what’s in your gut is mostly a curiosity.
What is the mechanism behind high blood pressure in obesity?
Many people with obesity also develop high blood pressure, but the mechanism that leads to this remains unclear. A new study using human tissue samples and mouse models may now have found an explanation.
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New low-cost approach detects building deformations with extreme precision in real time
Type 1 diabetes is not one but two distinct conditions, defined by diagnosis age
Children who are diagnosed with type 1 diabetes under the age of seven have a different form (or "endotype") of the condition compared with those diagnosed aged 13 or above
Type 1 diabetes occurs when the body's immune system attacks the insulin-producing cells in the pancreas, destroying them. This means they no longer regulate blood sugar levels effectively and people affected by the condition must inject insulin several times a day to do this job.
children who were diagnosed under 7 years old do not process insulin properly and the cells that make it are quickly destroyed. Surprisingly, those who are older at diagnosis (aged 13 or over) often continue to produce normal insulin; findings which reignite important questions about whether these "dormant" insulin-producing cells could be reinvigorated to work more effectively.
In their paper, the Exeter team has suggested new names for the two distinct endotypes: Type 1 Diabetes Endotype 1 (T1DE1) for that diagnosed in the youngest children, and Type 1 Diabetes Endotype 2 (T1DE2) for those who are older at diagnosis.
Personalized blood biopsies may provide signal of cancer recurrence
Personalized blood biopsies, which scan patient blood samples for genetic traces of cancer, could potentially provide an earlier warning of metastatic cancer before it is picked up through standard monitoring.
Asian scientists to map blood cell types across five population groups
Scientists from Singapore, South Korea, and Japan will study differences in blood cells across five major Asian population groups, including Chinese, Indian, and Malay, with the aim to understand why some are more susceptible to certain diseases and develop new blood-based diagnostic tests.
The COVID-19 coronavirus epidemic has a natural origin, scientists say
The novel SARS-CoV-2 coronavirus that emerged in the city of Wuhan, China, last year and has since caused a large scale COVID-19 epidemic is the product of natural evolution, according to findings published in the journal Nature Medicine.
Why gloves and masks are not stopping the corona virus ... because people, still don't have full knowledge about how to fully stop the spread ... according to experts ... we knew this would be the case ...
Wearing masks and gloves as a precaution against coronavirus is ineffective, unnecessary for the vast majority of people, and may even spread infections faster.
wash your hands, don't touch your face, and keep your distance.
The WHO says it is advisable to wear a protective mask in public if you suspect you are infected or someone you are caring for is, in which case the advice is to stay home whenever possible.
"There are limits to how a mask can protect you from being infected and we've said the most important thing everyone can do is wash your hands, keep your hands away from your face, observe very precise hygiene," said WHO's emergencies director Mike Ryan.
experts say masks can give people who wear them a false sense of security.
For example, many people who wear them don't follow the official advice of washing their hands thoroughly first, ensuring it's air tight and not to touch it once it's on.
"People are always readjusting theirmasksand that has the potential to contaminate them.
"If someone has come across the virus, it's surely going to be on the mask."
Gloves, similarly, don't greatly heighten protection and could even end up making you sick.
"If people cannot stop touching their face, gloves will not serve a purpose.
One 2015 study in theAmerican Journal of Infection Controlfound that people touch their face on average 20 times an hour.
The novelcoronavirusis transmitted viaskin contact, transferring infected globules of mucus via the ears, eyes or nose.
"Gloves are not a substitute for washing your hands. "If you're wearing gloves you're not washing your hands."
9 things you can do every day to limit your exposure to coronavirus
1. Wash your hands at every opportunity with soap and warm water for the recommended 20 seconds. I have observed that most people simply rinse their hands for a few seconds in restrooms, which is not effective in removing viruses. Twenty seconds is the minimum.
2. Avoid handling money. That dollar bill that you get for change could have been in the hands of an infected person just moments before it is placed in your hand. Usecredit cardsfor everything possible, even a cup of coffee.
3. When a signature is required, carry your own pen and never use the same pen that others have already used. Use only the back of your fingernail to scribble a signature on a pad.
4. Use your left hand (if right handed) to open doors and avoid using door knobs entirely whenever possible.
5. Use only a knuckle to push an elevator button and other common push devices. Your little finger knuckle is least likely to be used on your face.
6. Avoid using hand rails unless you are falling. It is common to see people sliding their hand along the rail as they use the steps. Think about how many people have coughed or sneezed before using that same railing.
7. Carry and use a hand sanitizer liberally when in meetings andpublic places, avoid sharing papers and objects that others have touched.
8. Hold your breath immediately if someone around you sneezes or coughs and then distance yourself by 6 feet.
9. If someone behind you in a line sneezes or coughs, let them in front of you.
These are common sense precautions that you can adopt immediately and make habitual so they happen without thinking about it. Combined with social distancing precautions recommended by experts, these personal precautions can add an important additional layer of protection.
Combine in a bowl, 2/3 cups rubbing alcohol (99.9% isopropyl alcohol) 1/3 cup aloe vera gel Stir. Decant into a soap or pump bottle Give it a good shake every now and then.
Aloe vera is a moisturiser that will stop your skin drying out. That’s useful, since cracks in the skin can increase the risk of bacterial infection. The main active ingredient in this sanitiser is the isopropyl alcohol (isopropanol). Most commercial hand sanitisers contain either ethanol, isopropanol, n-propanol or a combination of any two.
Mixtures of 60%-80% alcohol by volume kill microorganisms, so the 66% alcohol concentration in the recipe looks about right if pure rubbing alcohol (also known as “surgical spirits”) is used.
Mixing even the 70% solution with the aloe vera will make the final alcohol concentration too low to be useful.
Although it’s hard to get hold of, pure ethanol could be used in the recipe instead of isopropanol. Ethanol is the alcohol found in spirits, and another homemade sanitiser.
Studies have shown that higher alcohol concentrations work better, and we know that the WHO 75% isopropanol or 80% ethanol formulations can kill other coronaviruses. The homemade products may not be strong enough to inactivate the virus quite as effectively as the WHO formulation. On the other hand, some commercial hand sanitisers contain as little as 57% alcohol, so these homemade products would be better than that.
WHO-recommended concentration:
Three-quarters of a cup of isopropanol and a quarter of a cup of aloe vera gel. You could even substitute glycerol for the aloe vera gel.
Elusive Kondo Cloud Seen For The First Time An international team of scientists has observed Kondo clouds, a physical phenomenon first predicted nearly 90 years ago.
Scorpion Venom for Arthritis: A mouse model of rheumatoid arthritis reveals that a tiny protein in scorpion venom can deliver steroids to affected joints.
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Study unveils gapless ground state in an archetypal quantum kagome
Opening plastic bags and bottles may generate microplastics
Opening plastic bags and bottles may generate microplastics: everyday activities such as opening plastic bags and bottles, wrappers could be additional sources of small quantities of microplastics in the environment.
Coronavirus testing kits to be developed using new RNA imaging technology
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Study investigates evolution during Cambrian Explosion
Scientists have argued that features defining animal body plans have become increasingly elaborate through time such that they become burdened by their own complexity. This burden could prevent change and would explain the lack of new phyla since the Cambrian Explosion.
Dr. Krishna Kumari Challa
Coronavirus: who is most at risk of dying?
https://medicalxpress.com/news/2020-03-coronavirus-dying.html?utm_s...
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Unraveling turbulence: New insights into how fluids transform from order to disorder
https://phys.org/news/2020-02-unraveling-turbulence-insights-fluids...
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One little bandicoot can dig up an elephant’s worth of soil a year – and our ecosystem loves it
https://theconversation.com/one-little-bandicoot-can-dig-up-an-elep...
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Carbon chains adopt fusilli or spaghetti shapes if they have odd or even numbers
https://phys.org/news/2020-03-carbon-chains-fusilli-spaghetti-odd.h...
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The natural direction of heat flows—from hot to cold—can be reversed thanks to quantum effects
https://sciencex.com/news/2020-03-natural-flowsfrom-hot-coldcan-rev...
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The magnet that didn't exist
https://phys.org/news/2020-03-magnet-didnt.html?utm_source=nwletter...
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https://techxplore.com/news/2020-03-deep-networks-statistical-intui...
Why deep networks generalize despite going against statistical intuition
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https://techxplore.com/news/2020-03-tackling-5g-based-mobile-cloud-...
Tackling 5G-based mobile computing and cloud computing security concerns head-on
Mar 2, 2020
Dr. Krishna Kumari Challa
Cartilage cells, chromosomes and DNA preserved in 75 million-year-old baby duck-billed dinosaur
https://phys.org/news/2020-02-cartilage-cells-chromosomes-dna-milli...
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Computer from slime mould: A model to design logic gates inspired by a single-cell organism
https://techxplore.com/news/2020-03-logic-gates-single-cell.html?ut...
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Exploring neural mechanisms behind the perception of control in stressful situations
https://medicalxpress.com/news/2020-03-exploring-neural-mechanisms-...
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https://phys.org/news/2020-03-sea-mountains-muffle-earthquakes.html...
Sinking sea mountains make and muffle earthquakes
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Why billionaire climate philanthropists will always be part of the problem
https://theconversation.com/why-billionaire-climate-philanthropists...
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https://techxplore.com/news/2020-03-potassium-metal-battery-emerges...
Potassium metal battery emerges as a rival to lithium-ion technology
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https://techxplore.com/news/2020-03-tools-large-scale-storage-renew...
New tools show a way forward for large-scale storage of renewable energy
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A new tool for switching proteins on and off
https://phys.org/news/2020-03-tool-proteins.html?utm_source=nwlette...
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https://phys.org/news/2020-03-fast-ecofriendly-de-icing-aircrafts.h...
A fast, ecofriendly way of de-icing aircrafts
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https://phys.org/news/2020-03-epoxy-resins-hardening-button.html?ut...
Epoxy resins: Hardening at the push of a button
Mar 2, 2020
Dr. Krishna Kumari Challa
Egg stem cells do not exist, new study shows
https://phys.org/news/2020-03-egg-stem-cells.html?utm_source=nwlett...
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Rethinking 'tipping points' in ecosystems and beyond
https://phys.org/news/2020-03-rethinking-ecosystems.html?utm_source...
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https://phys.org/news/2020-03-groundwork-life.html?utm_source=nwlet...
When rocks lay the groundwork for the origin of life: Mineral catalysts found in deep-sea vents convert CO2 and H2 to biomolecules, showing striking parallels to known biological pathways.
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https://phys.org/news/2020-03-organ-on-a-chip-drug-toxicity-screeni...
New 'organ-on-a-chip' system holds promise for drug toxicity screening
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Swamp wallabies conceive new embryo before birth—a unique reproductive strategy
https://phys.org/news/2020-03-swamp-wallabies-embryo-birtha-unique....
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Genes that Escape Silencing on the Second X Chromosome May Drive Disease
https://www.the-scientist.com/features/genes-that-escape-silencing-...
Mar 3, 2020
Dr. Krishna Kumari Challa
Free lists of grants and fellowships around the world available online
https://www.nature.com/articles/d41586-020-00599-z?utm_source=Natur...
The databases — one for graduate students, one for postdoctoral researchers and one for junior faculty members — are produced and posted
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Contraception: Stopping sperm in their tracks
An automated high-throughput platform can screen for molecules that change the motility of sperm cells and their ability to fertilize.
https://elifesciences.org/articles/55396?utm_source=content_alert&a...
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How Fake News Goes Viral—Here’s the Math
Models similar to those used to track disease show what happens when too much information hits social media networks
https://www.scientificamerican.com/article/how-fake-news-goes-viral...
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Protective bio-shell could extend egg shelf life
https://www.scidev.net/global/innovation/news/protective-bio-shell-...
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Images of 'invisible' holes on cells may jumpstart research
https://phys.org/news/2020-03-images-invisible-holes-cells-jumpstar...
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One of the hallmarks of cancer is cell immortality.Researchers now have developed a promising molecular tool that targets and inhibits one of cell immortality's underlying gears: the enzyme telomerase.
https://phys.org/news/2020-03-chemists-inhibit-critical-gear-cell.h...
Mar 3, 2020
Dr. Krishna Kumari Challa
Air pollution 'pandemic' shortens lives by 3 years: study
https://medicalxpress.com/news/2020-03-world-air-pollution-pandemic...
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Engineers zap and unstick underwater smart glue
With a small zap of electricity, biomedical engineers at Michigan Technological University take an underwater smart glue prototype from sticky to not in seven seconds.
https://phys.org/news/2020-03-zap-unstick-underwater-smart.html?utm...
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https://medicalxpress.com/news/2020-03-visceral-fat-brain-cognition...
Visceral fat delivers signal to the brain that hurts cognition
Excessive weight around our middle gives our brain's resident immune cells heavy exposure to a signal that turns them against us, setting in motion a crescendo of inflammation that damages cognition, according to new research.
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https://medicalxpress.com/news/2020-03-obesity-virulence-influenza....
Obesity promotes virulence of influenza
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https://phys.org/news/2020-03-microstructures-self-assemble-materia...
Microstructures self-assemble into new materials
A material that is designed at the nanoscale but assembles itself—with no need for the precision laser assembly.
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Scientists shed light on mystery of dark matter
https://phys.org/news/2020-03-scientists-mystery-dark.html?utm_sour...
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They are there and they are gone: A fourth neutrino chase
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Scientists created an 'impossible' superconducting compound
https://phys.org/news/2020-03-scientists-impossible-superconducting...
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https://phys.org/news/2020-03-protein-meteorite.html?utm_source=nwl...
Protein discovered inside a meteorite
Protein called hemolithin discovered inside a meteorite ...
Mar 4, 2020
Dr. Krishna Kumari Challa
Anti-evolution drug could stop antibiotic resistance
The spread of antibiotic resistance is partly due to the ability of bacteria to pick up DNA from their surroundings. A new study, which started at the University of Groningen, showed that drugs blocking this ability (which is called 'competence') in the bacterium Streptococcus pneumoniae can indeed stop the spread of resistance in mice. As competence is blocked without affecting cell growth, it will be difficult for the bacteria to evolve resistance to the blockade. The study was published online by the journal Cell Host & Microbe on 3 March.
n order to pick up these resistance genes, a chain of events is needed that brings the bacteria in a state called 'competence.' During competence, bacteria express all the machinery required to 'catch' and incorporate the resistance genes into their own genomes.
Growth stress: Researchers figured out how to stop the cells from becoming competent.
In this assay, 1366 approved drugs were screened. It turned out that 46 of them blocked the induction of competence, without negatively affecting growth.
"When cells are under growth stress, for instance in the presence of antibiotics, they try to find a solution and become resistant to these drugs," explains Domenech. "Importantly, we did not observe resistance to the drugs found here as they do not cause growth stress." The 46 drugs could be divided into two groups: drugs affecting ion homeostasis, and antipsychotics. Several candidates were selected for further exploration. "This showed that they all acted through the same mechanism," says Domenech. They disrupted the proton-motive force: the electrochemical gradient that moves protons across the bacterial membrane and powers various processes.
Mar 4, 2020
Dr. Krishna Kumari Challa
WOW! Parrots get probability, use stats to make choices: study
https://phys.org/news/2020-03-parrots-probability-stats-choices.htm...
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https://phys.org/news/2020-03-cells-defend-viruses.html?utm_source=...
Researchers clarify how cells defend themselves from viruses
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https://sciencex.com/news/2020-03-evolution-famous-image-wrong.html...
Evolution: That famous 'march of progress' image is just wrong
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The origin of satiety: Brain cells that change shape after a meal
https://medicalxpress.com/news/2020-03-satiety-brain-cells-meal.htm...
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Busting junk science related to dreams: Real reasons Why People Dream About Their Teeth Falling Out
https://elemental.medium.com/why-people-dream-about-their-teeth-fal...
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Paleontologists Are Skeptical About Baby Dinosaur Cells Supposedly ...
https://gizmodo.com/paleontologists-are-skeptical-about-baby-dinosa...
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Alarming: Plastic Nests: Seabirds are using fishing debris to construct nests.
https://www.the-scientist.com/image-of-the-day/image-of-the-day-pla...
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https://medicalxpress.com/news/2020-03-ultra-precise-mind-controlle...
It's like you have a hand again: In a major advance in mind-controlled prosthetics for amputees, researchers have tapped faint, latent signals from arm nerves and amplified them to enable real-time, intuitive, finger-level control of a robotic hand.
Mar 4, 2020
Dr. Krishna Kumari Challa
Tropical forests' carbon sink is already rapidly weakening
The ability of the world's tropical forests to remove carbon from the atmosphere is decreasing, according to a study tracking 300,000 trees over 30 years, published today in Nature.
The global scientific collaboration, led by the University of Leeds, reveals that a feared switch of the world's undisturbed tropical forests from a carbon sink to a carbon source has begun.
Intact tropical forests are well-known as a crucial global carbon sink, slowing climate change by removing carbon from the atmosphere and storing it in trees, a process known as carbon sequestration. Climate models typically predict that this tropical forest carbon sink will continue for decades.
However, the new analysis of three decades of tree growth and death from 565 undisturbed tropical forests across Africa and the Amazon has found that the overall uptake of carbon into Earth's intact tropical forests peaked in the 1990s.
By the 2010s, on average, the ability of a tropical forest to absorb carbon had dropped by one-third. The switch is largely driven by carbon losses from trees dying.
The study by almost 100 institutions provides the first large-scale evidence that carbon uptake by the world's tropical forests has already started a worrying downward trend.
https://phys.org/news/2020-03-tropical-forests-carbon-rapidly-weake...
Mar 5, 2020
Dr. Krishna Kumari Challa
Biomaterial discovery enables 3-D printing of tissue-like vascular structures
https://phys.org/news/2020-03-biomaterial-discovery-enables-d-tissu...
More information: Nature Communications (2020). DOI: 10.1038/s41467-020-14716-z
https://phys.org/news/2020-03-cornstarch-pests.html?utm_source=nwle...
Researchers identify breaking point of conducting material
https://phys.org/news/2020-03-material.html?utm_source=nwletter&...
Scientists reveal the transportation mechanism of atmospheric microplastics
https://www.scidev.net/asia-pacific/farming/feature/poisoning-cases...
Poisoning cases mar India’s bid to be a global pesticides hub
Engineers have created a tabletop device that combines a robot, artificial intelligence and near-infrared and ultrasound imaging to draw blood or insert catheters to deliver fluids and drugs.
https://techxplore.com/news/2020-03-robot-artificial-intelligence-i...
https://techxplore.com/news/2020-03-tunnel-safety-minutes.html?utm_...
Tunnel fire safety: With only minutes to respond, fire education really counts
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https://phys.org/news/2020-03-dna-sugars-characterised-unprecedente...
DNA sugars characterised in unprecedented resolution, atom by atom
Mar 5, 2020
Dr. Krishna Kumari Challa
High-tech contact lenses correct color blindness
https://phys.org/news/2020-03-high-tech-contact-lenses.html?utm_sou...
--
https://techxplore.com/news/2020-03-tremors-ai-robots.html?utm_sour...
Fighting hand tremors with AI and robots
--
https://phys.org/news/2020-03-energy-error-free-catalysts.html?utm_...
Energy researchers invent error-free catalysts
--
https://phys.org/news/2020-03-bendable-cement-free-concrete-potenti...
New bendable cement-free concrete can potentially make safer, long-lasting and greener infrastructure
--
https://phys.org/news/2020-03-scorpions-fluorescent-compound-parasi...
Scorpions make a fluorescent compound that could help protect them from parasites
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Excessive weight around our middle gives our brain's resident immune cells heavy exposure to a signal that turns them against us, setting in motion a crescendo of inflammation that damages cognition, according to new research.
https://medicalxpress.com/news/2020-03-visceral-fat-brain-cognition...
--
https://blogs.scientificamerican.com/observations/mind-reading-and-...
Mind Reading and Mind Control Technologies Are Coming
We need to figure out the ethical implications before they arrive
Mar 5, 2020
Dr. Krishna Kumari Challa
Why men (and other male animals) die younger: It's all in the Y chromosome
According to popular theory, men live shorter lives than women because they take bigger risks, have more dangerous jobs, drink and smoke more, and are poor at seeking advice from doctors.
But research by scientists at UNSW Sydney suggests the real reason may be less related to human behaviour and more to do with the type of sex chromosomes we share with most animal species.
In a study published today in Biology Letters, researchers from UNSW Science's School of Biological, Earth and Environmental Sciences analysed all available academic literature on sex chromosomes and lifespan—and they tried to establish whether there was a pattern of one sex outliving the other that was repeated across the animal kingdom.
Unguarded X hypothesis
Specifically, they wanted to test the 'unguarded X hypothesis' which suggests that the Y chromosome in heterogametic sexes—those with XY (male) sex chromosomes rather than XX (female) sex chromosomes—is less able to protect an individual from harmful genes expressed on the X chromosome. The hypothesis suggests that, as the Y chromosome is smaller than the X chromosome, and in some cases absent, it is unable to 'hide' an X chromosome that carries harmful mutations, which may later expose the individual to health threats.
Conversely, there is no such problem in a pair of homogametic chromosomes (XX), where a healthy X chromosome can stand in for another X that has deleterious genes to ensure those harmful genes aren't expressed, thus maximising the length of life for the organism.
First author on the paper and Ph.D. student Zoe Xirocostas says that after examining the lifespan data available on a wide range of animal species, it appears that the unguarded X hypothesis stacks up. This is the first time that scientists have tested the hypothesis across the board in animal taxonomy; previously it was tested only within a few groups of animals.
"We looked at lifespan data in not just primates, other mammals and birds, but also reptiles, fish, amphibians, arachnids, cockroaches, grasshoppers, beetles, butterflies and moths among others," she says.
"And we found that across that broad range of species, the heterogametic sex does tend to die earlier than the homogametic sex, and it's 17.6 percent earlier on average."
https://phys.org/news/2020-03-men-male-animals-die-younger.html?utm...
Mar 5, 2020
Dr. Krishna Kumari Challa
Regional stability of ecosystems over time depends on local species diversity
https://phys.org/news/2020-03-regional-stability-ecosystems-local-s...
--
https://phys.org/news/2020-03-electrical-power-moderate-temperature...
Electrical power generation from moderate-temperature radiative thermal sources
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Wearing clothes could release more microfibres to the environment than washing them
https://phys.org/news/2020-03-microfibres-environment.html?utm_sour...
--
https://phys.org/news/2020-03-reveals-mechanism-dissipate-excess-su...
A mechanism that plants can use to dissipate excess sunlight as heat: excess energy is transferred from chlorophyll, the pigment that gives leaves their green color, to other pigments called carotenoids, which can then release the energy as heat.
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https://medicalxpress.com/news/2020-03-international-largest-geneti...
International study completes the largest genetic map of psychiatric disorders so far
International study completes the largest genetic map of psychiatric disorders so far: autism, ADHD, schizophrenia, bipolar disorder, depression, obsessive-compulsive disorder and Tourette syndrome were covered
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https://phys.org/news/2020-03-carbon-membrane-power.html?utm_source...
New carbon membrane generates a hundred times more power
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Paper sheds light on infant universe and origin of matter
https://phys.org/news/2020-03-paper-infant-universe.html?utm_source...
--
https://phys.org/news/2020-03-natural-contaminant-threat-groundwate...
Natural contaminant threat to drinking water from groundwater
Mar 5, 2020
Dr. Krishna Kumari Challa
Experiments show dogs can 'smell' radiated heat
https://phys.org/news/2020-03-dogs.html?utm_source=nwletter&utm...
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Experts discover toolkit to repair DNA breaks linked to aging, cancer and MND
https://medicalxpress.com/news/2020-03-experts-toolkit-dna-linked-a...
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Study: Women's hormonal cycles do not affect preferences for men's behaviour
https://medicalxpress.com/news/2020-03-women-hormonal-affect-men-be...
--
No comment: Wikipedia Censors List of Scientists Who Don’t Agree With Global-warming “Consensus”.
https://www.thenewamerican.com/usnews/politics/item/35099-
wikipedia-censors-list-of-scientists-who-don-t-agree-with-global-wa...
https://archive.vn/NDmaV
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Bad Air: Pilots worldwide complain of unsafe cabin fumes
https://www.politico.com/news/2020/03/07/airplanes-unsafe-cabin-fum...
--
Apollo Rock Samples Heat Up Moon Formation Debate
A new study suggests there are key differences between the compositions of Earth and its natural satellite, with significant implications for lunar history
https://www.scientificamerican.com/article/apollo-rock-samples-heat...
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How a key brain region combines visual and spatial information to navigate
https://medicalxpress.com/news/2020-03-key-brain-region-combines-vi...
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https://phys.org/news/2020-03-darkness-unravel-energy.html?utm_sour...
From darkness to light: New findings unravel how plants control energy generation
Mar 5, 2020
Dr. Krishna Kumari Challa
New insights into evolution: Why genes appear to move around
https://phys.org/news/2020-03-insights-evolution-genes.html?utm_sou...
--
Faster-Than-Light Speeds Could Be Why Gamma-Ray Bursts Seem to Go Backwards in Time
https://www.sciencealert.com/faster-than-light-speeds-could-be-the-...
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Researchers tracked 300,000 trees only to find that rainforests are losing their power to help humanity
https://theconversation.com/we-tracked-300-000-trees-only-to-find-t...
--
Effects of wildfires on health
https://phys.org/news/2020-03-effects-wildfires-health.html?utm_sou...
--
Safety zone saves giant moons from fatal plunge
https://phys.org/news/2020-03-safety-zone-giant-moons-fatal.html?ut...
--
Roll-up TVs and bendable smart phones: The future of flexible electronic materials
https://phys.org/news/2020-03-roll-up-tvs-bendable-smart-future.htm...
--
https://phys.org/news/2020-03-bacteria-tolerate-antibiotics.html?ut...
Bacteria might help other bacteria to tolerate antibiotics better
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Research on soldier ants reveals that evolution can go in reverse
https://phys.org/news/2020-03-soldier-ants-reveals-evolution-revers...
Why organisms shrink in a warming world
https://www.sciencedaily.com/releases/2020/03/200309093021.htm
Mar 5, 2020
Dr. Krishna Kumari Challa
Rapid DNA test quickly identifies victims of mass casualty event
https://phys.org/news/2020-03-rapid-dna-quickly-victims-mass.html?u...
--
https://theconversation.com/coronavirus-and-the-black-death-spread-...
Coronavirus and the Black Death: spread of misinformation and xenophobia shows we haven’t learned from our past
--
http://www.buffalo.edu/news/releases/2020/03/008.html
Don’t blame the messenger — unless it’s all stats and no story
--
Landmark Computer Science Proof Cascades Through Physics and Math
Why don’t Venus flytraps eat their pollinators?
The carnivorous plants are disappearing, so scientists need to understand their symbiosis with insects
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https://phys.org/news/2020-03-revolution-vaccine-developmentbut-ben...
A revolution in vaccine development—but will we all benefit?
Mystery of lifespan gap between sexes may be solved, say researchers
Study finds chromosomes offer clue to longer life of different sexes in different species
https://www.theguardian.com/science/2020/mar/04/mystery-of-lifespan...
Mar 5, 2020
Dr. Krishna Kumari Challa
Have we really found an alien protein inside a meteorite?
Read more: Have we really found an alien protein inside a meteorite?
https://www.newscientist.com/article/2235981-have-we-really-found-a...
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https://phys.org/news/2020-03-global-endangered-species-overlooks-g...
Global plan to protect endangered species 'overlooks genetic diversity'
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Study reveals breast cancer cells shift their metabolic strategy to metastasize
https://phys.org/news/2020-03-reveals-breast-cancer-cells-shift.htm...
--
https://medicalxpress.com/news/2020-03-seismic-imaging-technology-f...
Seismic imaging technology could deliver finely detailed images of the human brain
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Could cancer immunotherapy success depend on gut bacteria?
https://medicalxpress.com/news/2020-03-cancer-immunotherapy-success...
--
Not only washing your hands but drying them with disposable paper is also equally important to stop infections ...
https://theconversation.com/coronavirus-and-handwashing-research-sh...
Mar 5, 2020
Dr. Krishna Kumari Challa
Fruit fly study suggests neither nature nor nurture is responsible for individuality. Researchers found evidence that neither nature nor nurture leads to personality differences—it is the result of nonheritable noise during brain development.
https://phys.org/news/2020-03-fruit-nature-nurture-responsible-indi...
More information: Gerit Arne Linneweber et al. A neurodevelopmental origin of behavioral individuality in the Drosophila visual system, Science (2020). DOI: 10.1126/science.aaw7182
Study of hunter-gatherer community shows that how humans rest may affect their risk for heart disease
https://phys.org/news/2020-03-hunter-gatherer-humans-rest-affect-he...
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https://phys.org/news/2020-03-virus-symmetric-shells.html?utm_sourc...
How a virus forms its symmetric shells
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Ancient shell shows days were half-hour shorter 70 million years ago
https://phys.org/news/2020-03-ancient-shell-days-half-hour-shorter....
--
Retracted: Paper claiming climate change caused by distance from Sun
https://phys.org/news/2020-03-retracted-paper-climate-distance-sun....
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Economic shock waves from the coronavirus outbreak have curbed carbon pollution from China and beyond, but hopes for climate benefits from the slowdown are likely to be dashed quickly, experts say.
https://phys.org/news/2020-03-climate-crisis-back-burner-pandemic-t...
Mar 7, 2020
Dr. Krishna Kumari Challa
Solved: The mystery of the expansion of the universe
https://phys.org/news/2020-03-mystery-expansion-universe.html?utm_s...
--
https://techxplore.com/news/2020-03-technological-anxiety.html?utm_...
Avoiding a technological anxiety attack
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Chemists create new artificial enzyme
https://phys.org/news/2020-03-chemists-artificial-enzyme.html?utm_s...
--
https://phys.org/news/2020-03-domesticated-beneficial-soil-microbes...
Some domesticated plants ignore beneficial soil microbes
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https://theconversation.com/malnourished-bugs-higher-co2-levels-mak...
Malnourished bugs: Higher CO2 levels make plants less nutritious, hurting insect populations
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https://phys.org/news/2020-03-climate-shifts-prompt-shrubs-trees.ht...
Climate shifts prompt shrubs and trees to take root in open areas
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https://medicalxpress.com/news/2020-03-cancer-cells-copper-binding-...
Cancer cells spread using a copper-binding protein
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Scientists categorize neurons by the way the brain jiggles during a heartbeat
https://medicalxpress.com/news/2020-03-scientists-categorize-neuron...
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Thriving neuron 'nursery' found in a section of adult human nose tissue
https://medicalxpress.com/news/2020-03-neuron-nursery-section-adult...
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https://medicalxpress.com/news/2020-03-altruism-people-happy-prior....
Altruism may not make people as happy as prior studies suggested
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Mar 11, 2020
Dr. Krishna Kumari Challa
Sea turtles may confuse the smell of ocean plastic with food
The reptiles respond to both scents by sniffing more, a key foraging behavior
https://www.sciencenews.org/article/sea-turtles-smell-plastic-ocean...
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https://www.sciencealert.com/astronomers-have-found-a-crazy-new-typ...
Astronomers Have Found a Peculiar New Type of Star That Only Pulses on One Side
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https://medicalxpress.com/news/2020-03-zombie-brain-cells-neurons.h...
'Zombie' brain cells develop into working neurons
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https://phys.org/news/2020-03-underground-food-sources-enable-bacte...
Underground food sources enable bacteria to release arsenic into groundwater
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Researchers find new minor planets beyond Neptune
https://phys.org/news/2020-03-minor-planets-neptune.html?utm_source...
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How secure are four and six-digit mobile phone PINs?
https://techxplore.com/news/2020-03-six-digit-mobile-pins.html?utm_...
--
https://phys.org/news/2020-03-chemicals.html?utm_source=nwletter&am...
A possible end to 'forever' chemicals
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https://phys.org/news/2020-03-antiaging-biochemical-mechanism-mouse...
Antiaging biochemical mechanism found in mouse, bat and naked mole rat cells
Mar 11, 2020
Dr. Krishna Kumari Challa
Mar 11, 2020
Dr. Krishna Kumari Challa
Microbial DNA in patient blood may be tell-tale sign of cancer
https://medicalxpress.com/news/2020-03-microbial-dna-patient-blood-...
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Making choices becomes a lot easier when we have heuristics, or simple rules of thumb. One example is the five-a-day rule, which encourages people to eat five portions of fruit and vegetables each day. It's much easier to follow than weighing and adding up your daily intake of different fruits and vegetables to see if you've consumed the necessary amount in grams.
Popularising simple rules of thumb—like replace red meat and dairy with plant-based products—helps people skip the stupefying step of computing the complex carbon footprint of every single meal they eat. They allow people to make fast and effective decisions about what to eat.
If you want to reduce the climate impact of our food choices, try to replace red meat and dairy with plant-based products more often, and avoid products that are flown in or grown in a greenhouse. These choices would be good for the climate, with the added bonus of being good for your health.
Heuristics are remarkably effective compared to more complex strategies for making decisions. According to research in psychology, this is probably due to them being easier to remember, implement in different situations, and stick to over time.
Microbes far beneath the seafloor rely on recycling to survive
https://phys.org/news/2020-03-microbes-beneath-seafloor-recycling-s...
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https://phys.org/news/2020-03-amazon-collapse-years.html?utm_source...
Close to tipping point, Amazon could collapse in 50 years
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Building blocks for life on Earth arrived much later than we thought, billion-year-old rocks show
https://phys.org/news/2020-03-blocks-life-earth-thought-billion-yea...
Mar 12, 2020
Dr. Krishna Kumari Challa
Even concerned consumers don't know which food choices have the lowest climate impact
The energy used to grow, process, package and transport food accounts for about a quarter of global greenhouse gas emissions. But not all food is equally carbon-intensive. Researchers can measure the impact of different food choices at each stage of their journey—from farm to fork—to work out their carbon footprint.
Experts suggest that, to reduce your food-related carbon footprint, the best dietary changes to make include replacing red meat and dairy products with plant-based alternatives, and avoiding products that are flown in, or grown in a commercial greenhouse.
Well-intentioned but misinformed
For one, corporate sustainability campaigns tend to shift responsibility onto consumers by focusing on reusing and recycling packaging. This has the obvious appeal of presenting no risk to a company's bottom line. Although reducing the amount of plastic packaging that ends up in landfill is important, it's unlikely to make much difference to climate change.
What should we do when the organic vegetables are wrapped in plastic and non-organic ones aren't? Or when the milk-based yogurt pot is decorated with a landscape of happy cows wandering free in lush fields, while the plainly packaged soy yogurt conjures images of the Amazon burning to ashes? What about when the fresh bananas arrive from Ecuador but the local Scottish strawberries are kept in the freezer? Whether it's plastic packaging versus organic produce, animal welfare versus deforestation, or travel miles versus energy consumption, there is a lot to consider.
Another cause for confusion might be the nature of advice given by climate experts. Often, the climate impact of food choices is presented in terms of grams of greenhouse gas emissions.
We found that people were confused when they were asked "how many grams of greenhouse gas emissions could be saved by growing 1 kg of produce organically instead of conventionally?", or "packing 1 kg of produce into a paper bag instead of plastic"? They were less confused and could answer more accurately when asked the same questions about the percentage of the greenhouse gas emissions that could be saved.
https://phys.org/news/2020-03-consumers-dont-food-choices-lowest.ht...
Mar 12, 2020
Dr. Krishna Kumari Challa
Genetics research sheds light on 'dark' portion of genome
https://phys.org/news/2020-03-genetics-dark-portion-genome.html?utm...
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https://medicalxpress.com/news/2020-03-reveals-delicate-dynamic-con...
Study reveals a delicate dance of dynamic changes in the conscious brain
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https://medicalxpress.com/news/2020-03-patching-flat-herniated-disc...
New fix heals herniated discs: A new two-step technique to repair herniated discs uses hyaluronic acid gel to re-inflate the disc and collagen gel to seal the hole, essentially repairing ruptured discs like you'd repair a flat tire.
--
https://www.vox.com/2018/8/21/17588092/vaccines-science-community-e...
The scientific community strongly supports the use of vaccines, based on decades of experience and research showing vaccines are effective and safe.
--
https://www.sciencealert.com/a-potential-universal-flu-vaccine-just...
A Potential Universal Flu Vaccine Just Passed an Important Clinical Trial
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https://www.sciencealert.com/hiv-cured-london-man-still-has-no-trac...
Second Person Declared 'Cured' of HIV, With No Trace of Infection After Nearly 3 Years
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What’s the difference between pandemic, epidemic and outbreak?
https://theconversation.com/whats-the-difference-between-pandemic-e...
--
https://phys.org/news/2020-03-mechanical-animal-origami-precisely-n...
Researchers at the RIKEN Center for Biosystems Dynamics Research (BDR) in Japan have identified a new mechanism that helps animals to develop with precise and constant form.
A new mechanism that helps animals to develop with precise and constant form.
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Mar 12, 2020
Dr. Krishna Kumari Challa
New nano strategy fights superbugs: It's not enough to take antibiotic-resistant bacteria out of wastewater to eliminate the risks they pose to society. The bits they leave behind have to be destroyed as well.
Researchers at Rice University's Brown School of Engineering have a new strategy for "trapping and zapping" antibiotic resistant genes, the pieces of bacteria that, even though theirs hosts are dead, can find their way into and boost the resistance of other bacteria.
The team led by Rice environmental engineer Pedro Alvarez is using molecular-imprinted graphitic carbon nitride nanosheets to absorb and degrade these genetic remnants in sewage system wastewater before they have the chance to invade and infect other bacteria.
The researchers targeted plasmid-encoded antibiotic-resistant genes (ARG) coding for New Delhi metallo-beta-lactamase 1 (NDM1), known to resist multiple drugs. When mixed in solution with the ARGs and exposed to ultraviolet light, the treated nanosheets proved 37 times better at destroying the genes than graphitic carbon nitride alone. "Unfortunately, some superbugs resist chlorination, and resistant bacteria that die release extracellular ARGs that get stabilized by clay in receiving environments and transform indigenous bacteria, becoming resistome reservoirs. "In this paper, we discuss a trap-and-zap strategy to destroy extracellular ARGs. Our strategy is to use molecularly imprinted coatings that enhance selectivity and minimize interference by background organic compounds."
Molecular imprinting is like making a lock that attracts a key, not unlike natural enzymes with binding sites that only fit molecules of the right shape. For this project, graphitic carbon nitride molecules are the lock, or photocatalyst, customized to absorb and then destroy NDM1.
https://phys.org/news/2020-03-nano-strategy-superbugs.html?utm_sour...
Two-pronged attack on DNA repair could kill drug-resistant cancers
https://medicalxpress.com/news/2020-03-two-pronged-dna-drug-resista...
--
https://medicalxpress.com/news/2020-03-coronavirus-surfaces-days.ht...
Tests show new coronavirus lives on some surfaces for up to three days
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Heat and light create new biocompatible microparticles:
Heat & light create new biocompatible microparticles. Biomedical engineers have devised a method that is safe for living tissues that will allow them to create new shapes attractive for drug delivery, diagnostics and tissue engineering.
https://phys.org/news/2020-03-biocompatible-microparticles.html?utm...
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Mar 13, 2020
Dr. Krishna Kumari Challa
Researchers create focus-free camera with new flat lens
https://phys.org/news/2020-03-focus-free-camera-flat-lens.html?utm_...
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Scientists discover the mathematical rules underpinning brain growth
https://phys.org/news/2020-03-scientists-mathematical-underpinning-...
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https://phys.org/news/2020-03-earth-mantle-core-planet-early.html?u...
New theory: Earth's mantle, not its core, may have generated planet's early magnetic field
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Biocontrol: New aflatoxin biocontrol product lowers contamination of groundnut and maize
https://phys.org/news/2020-03-aflatoxin-biocontrol-product-lowers-c...
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https://phys.org/news/2020-03-india-chandrayaan-highest-resolution-...
You have to see the pics to believe this: India's Chandrayaan 2 is creating the highest-resolution map we have of the moon
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https://techxplore.com/news/2020-03-hack-siri-google-ultrasonic.htm...
Research finds a new way to hack Siri and Google Assistant with ultrasonic waves
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https://techxplore.com/news/2020-03-fast-charging-electric-car-batt...
Fast-charging damages electric car batteries: Commercial fast-charging stations subject electric car batteries to high temperatures and high resistance that can cause them to crack, leak, and lose their storage capacity
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https://phys.org/news/2020-03-spillway-electrons-lithium-metal-batt...
'Spillway' for electrons could keep lithium metal batteries from catching fire
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https://phys.org/news/2020-03-hero-proteins.html?utm_source=nwlette...
Hero proteins are here to save other proteins: Researchers have discovered a new group of proteins, remarkable for their unusual shape and abilities to protect against protein clumps associated with neurodegenerative diseases
Mar 13, 2020
Dr. Krishna Kumari Challa
Metabolic fossils from the origin of life
https://phys.org/news/2020-03-metabolic-fossils-life.html?utm_sourc...
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https://phys.org/news/2020-03-forge-weapon-parasites-infections.htm...
Researchers forge a new weapon to fight parasites and other infections
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https://phys.org/news/2020-03-aging-nutrients-competition-microbiot...
Aging and nutrients competition determine changes in microbiota
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https://phys.org/news/2020-03-link-motor-neuron.html?utm_source=nwl...
Researchers study the link between motor neuron activation and speed
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https://medicalxpress.com/news/2020-03-dirty-air-gain-weight.html?u...
Breathing dirty air takes a heavy toll on gut bacteria, boosting risk of obesity, diabetes, gastrointestinal disorders and other chronic illnesses
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https://medicalxpress.com/news/2020-03-statins-starve-cancer-cells-...
Statins starve cancer cells to death
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https://medicalxpress.com/news/2020-03-cancer-immune-tumors-remotel...
Cancer: The immune system attacks tumors remotely
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https://medicalxpress.com/news/2020-03-molds-lung-barrier-spur-futu...
Molds damage the lung's protective barrier to spur future asthma attacks
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Interesting story: Indian amputee's new limbs from a man adapt to her body and became almost 'female"
https://medicalxpress.com/news/2020-03-hand-made-tale-indian-ampute...
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https://medicalxpress.com/news/2020-03-affect-falling.html?utm_sour...
Sound can directly affect balance and deafness can lead to risk of falling
Mar 13, 2020
Dr. Krishna Kumari Challa
How chronic stress changes the brain – and what you can do to reverse the damage
https://theconversation.com/how-chronic-stress-changes-the-brain-an...
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https://theconversation.com/will-warmer-weather-stop-the-spread-of-...
Will warmer weather stop the spread of coronavirus?
--
https://www.sciencenews.org/article/starlink-spacex-satellites-amaz...
New fleets of private satellites are clogging the night sky
Global internet satellites are photobombing telescopes and messing with astronomers’ research
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https://www.nature.com/articles/d41586-020-00709-x?utm_source=Natur...
Hundreds of scientists have peer-reviewed for predatory journals
Microbial Life Has Been Found Deep in Earth's Crust Beneath The Ocean Floor
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https://www.sciencealert.com/scientists-find-incredibly-ancient-bla...
Ancient Supermassive Black Hole Has Its Particle Beam Aimed Right at Earth
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https://phys.org/news/2020-03-ice-age.html?utm_source=nwletter&...
What causes an ice age to end? Find the answer ...
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https://medicalxpress.com/news/2020-03-associative-memory-brain.htm...
How associative fear memory is formed in the brain
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https://phys.org/news/2020-03-puzzle-nitrogen-cometary-analogs.html...
Puzzle about nitrogen solved thanks to cometary analogs
Mar 13, 2020
Dr. Krishna Kumari Challa
Invisible plastics in water ... even in the water your drink ...
https://phys.org/news/2020-03-invisible-plastics.html?utm_source=nw...
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https://phys.org/news/2020-03-first-time-proof-chemical-reactions-p...
First-time direct proof of chemical reactions in particulates
--
https://phys.org/news/2020-03-raman-microspectroscopy-rapidly-disea...
Using Raman microspectroscopy to rapidly detect disease-causing bacteria
Researchers at the Indian Institute of Science (IISc) have developed a method to rapidly identify and check whether a disease-causing bacterium is alive or dead.
--
https://phys.org/news/2020-03-cells-quiet.html?utm_source=nwletter&...
How T cells make sure they have quiet time
--
https://phys.org/news/2020-03-microscopy-technique-uncovers-previou...
New microscopy technique uncovers previously hidden information in micrographs of biological cells
--
https://phys.org/news/2020-03-reveals-antibiotic-resistance-evolves...
Study reveals how antibiotic resistance evolves and spreads in 'top priority' superbug
--
https://phys.org/news/2020-03-long-term-analysis-gm-cotton-insects....
Long-term analysis shows GM cotton no match for insects in India
--
https://phys.org/news/2020-03-alarm-danger.html?utm_source=nwletter...
How plants sound the alarm about danger
Mar 14, 2020
Dr. Krishna Kumari Challa
Hornwort genomes could lead to crop improvement
https://phys.org/news/2020-03-hornwort-genomes-crop.html?utm_source...
--
https://phys.org/news/2020-03-sperm-dad-genome-merge-mom.html?utm_s...
How sperm unpack dad's genome so it can merge with mom's
--
https://phys.org/news/2020-03-tune-greenness-quality.html?utm_sourc...
How plants tune their greenness to light quality
--
https://medicalxpress.com/news/2020-03-natural-killer-cells-halt-pa...
'Natural killer' cells could halt Parkinson's progression: Researchers have found that "natural killer" white blood cells could guard against the cascade of cellular changes that lead to Parkinson's disease and help stop its progression.
--
https://medicalxpress.com/news/2020-03-smart-bones-fracture.html?ut...
Smart bones curve to protect against fracture
--
https://medicalxpress.com/news/2020-03-mimicking-cancer-evasive-tac...
Mimicking cancer's evasive tactics, microparticles show promise for transplant rejection
--
https://medicalxpress.com/news/2020-03-obesity-microbes-alternative...
Solving obesity: Could manipulating microbes offer an alternative to weight loss surgery?
--
https://medicalxpress.com/news/2020-03-brain-cells-infrastructure-m...
How brain cells lay down infrastructure to grow and create memories
Mar 14, 2020
Dr. Krishna Kumari Challa
Researchers discover tooth-enamel protein in eyes with dry age-related macular degeneration (AMD)
https://medicalxpress.com/news/2020-03-tooth-enamel-protein-eyes-am...
--
https://medicalxpress.com/news/2020-03-coronavirus-quickly-people-s...
Coronavirus spreads quickly and sometimes before people have symptoms, study finds
https://medicalxpress.com/news/2020-03-coronavirus-quickly-people-s...
--
https://medicalxpress.com/news/2020-03-stem-cells-exert-tight-brain...
Stem cells exert tight control over the timing of brain development
--
https://medicalxpress.com/news/2020-03-loss-jedi-receptor-neuron.ht...
Loss of 'Jedi' receptor alters neuron activity and increase pain feelings.
--
https://www.nature.com/articles/d41586-020-00725-x?utm_source=Natur...
Why gigantic locust swarms are challenging governments and researchers
Scientists are championing biopesticides and better monitoring — but heavy rains, war and a lack of funding have been hampering efforts to control the big outbreak
--
https://www.nature.com/articles/s41569-020-0360-5?utm_source=Nature...
COVID-19 and the damage to cardiovascular system
--
https://massivesci.com/articles/clever-birds-natural-selection-inte...
WOW! When finding a mate, intelligence matters to female parakeets
A new study finds that female budgies are attracted to smarter partners
--
A Giant 'Bubble' Containing Our Galaxy Could Explain Why The Hubble Constant Is Broken
https://www.sciencealert.com/our-galaxy-could-be-a-in-a-giant-void-...
Mar 14, 2020
Dr. Krishna Kumari Challa
Did you think and say women can't do 'dangerous research' like men do? Say that again after reading this story and looking at the picture of this scientist working
...https://www.nature.com/articles/d41586-020-00673-6?utm_source=Natur...
--
https://www.scientificamerican.com/article/how-chinas-bat-woman-hun...
How China’s “Bat Woman” Hunted Down Viruses from SARS to the New Coronavirus
Wuhan-based virologist Shi Zhengli has identified dozens of deadly SARS-like viruses in bat caves, and she warns there are more out there
Mar 14, 2020
Dr. Krishna Kumari Challa
Coronavirus: can herd immunity really protect us?
https://theconversation.com/coronavirus-can-herd-immunity-really-pr...
--
while there may be great promise for analysing our gut microbiome to help diagnose and treat people in the future, for the moment knowing what’s in your gut is mostly a curiosity.
https://theconversation.com/should-i-test-my-gut-microbes-to-improv...
--
https://www.medicalnewstoday.com/articles/what-is-the-mechanism-beh...
What is the mechanism behind high blood pressure in obesity?
Many people with obesity also develop high blood pressure, but the mechanism that leads to this remains unclear. A new study using human tissue samples and mouse models may now have found an explanation.
--
New low-cost approach detects building deformations with extreme precision in real time
https://phys.org/news/2020-03-low-cost-approach-deformations-extrem...
--
https://phys.org/news/2020-03-lego-bricks-survive-ocean-years.html?...
Study suggests LEGO bricks could survive in ocean for up to 1,300 years
--
https://phys.org/news/2020-03-scientists-quantify-power-coastal-ero...
Scientists quantify how wave power drives coastal erosion
--
https://phys.org/news/2020-03-theory-magnetar-formation.html?utm_so...
A new theory of magnetar formation
Mar 15, 2020
Dr. Krishna Kumari Challa
Scientists can now edit multiple genome fragments at a time
https://phys.org/news/2020-03-scientists-multiple-genome-fragments....
--
https://phys.org/news/2020-03-scientists-blocks-life.html?utm_sourc...
Scientists have discovered the origins of the building blocks of life
--
https://phys.org/news/2020-03-human-affects-interactions-seed-dispe...
Human activity affects interactions between plants and seed-dispersing birds
--
https://medicalxpress.com/news/2020-03-lack-environmental-creation-...
Lack of environmental light may prevent creation of long-term memories
--
https://phys.org/news/2020-03-nanostructured-rubber-like-material-o...
Nanostructured rubber-like material with optimal properties could replace human tissue
--
https://phys.org/news/2020-03-cancer-cells-cluttering-disposal.html...
Selective killing of cancer cells by cluttering their waste disposal system
--
https://phys.org/news/2020-03-regional-nuclear-war-global-food.html...
Even a limited India-Pakistan nuclear war would bring global famine, says study
Mar 17, 2020
Dr. Krishna Kumari Challa
Type 1 diabetes is not one but two distinct conditions, defined by diagnosis age
Children who are diagnosed with type 1 diabetes under the age of seven have a different form (or "endotype") of the condition compared with those diagnosed aged 13 or above
Type 1 diabetes occurs when the body's immune system attacks the insulin-producing cells in the pancreas, destroying them. This means they no longer regulate blood sugar levels effectively and people affected by the condition must inject insulin several times a day to do this job.
children who were diagnosed under 7 years old do not process insulin properly and the cells that make it are quickly destroyed. Surprisingly, those who are older at diagnosis (aged 13 or over) often continue to produce normal insulin; findings which reignite important questions about whether these "dormant" insulin-producing cells could be reinvigorated to work more effectively.
In their paper, the Exeter team has suggested new names for the two distinct endotypes: Type 1 Diabetes Endotype 1 (T1DE1) for that diagnosed in the youngest children, and Type 1 Diabetes Endotype 2 (T1DE2) for those who are older at diagnosis.
https://medicalxpress.com/news/2020-03-diabetes-distinct-conditions...
Mar 17, 2020
Dr. Krishna Kumari Challa
Researchers expose vulnerabilities of password managers
https://techxplore.com/news/2020-03-expose-vulnerabilities-password...
--
https://phys.org/news/2020-03-shark-molecule-cholesterol-enzyme-des...
'Shark molecule' protects cholesterol enzyme from destruction
--
https://phys.org/news/2020-03-rivals-offspring-greater-mutations.ht...
Love rivals risk having offspring with a greater number of harmful mutations
--
https://phys.org/news/2020-03-reveals-early-evolution-cortex.html?u...
Brain evolution: New study reveals early evolution of cortex
--
https://phys.org/news/2020-03-dr-jekyll-hyde-enzyme-tb.html?utm_sou...
Enzyme targeted by TB antibiotic later stops the drug destroying it
--
https://phys.org/news/2020-03-kind-crispr-technology-rna-viruses.ht...
New kind of CRISPR technology to target RNA, including RNA viruses like coronavirus
--
https://phys.org/news/2020-03-sensory-danger-zones-pollution-impact...
Sensory danger zones: How sensory pollution impacts animal survival
--
Mar 17, 2020
Dr. Krishna Kumari Challa
What lives, what dies? The role of science in the decision to cull seals to save cod
https://theconversation.com/what-lives-what-dies-the-role-of-scienc...
--
https://phys.org/news/2020-03-highly-efficient-low-cost-method-dna....
Highly efficient, low-cost method developed to reduce DNA errors
--
https://phys.org/news/2020-03-unraveling-puzzle-madagascar-forest-c...
Unraveling the puzzle of Madagascar's forest cats
--
https://medicalxpress.com/news/2020-03-fecal-microbiota-transplants...
Fecal microbiota transplants successfully treat patients with C. difficile
--
https://medicalxpress.com/news/2020-03-personalized-blood-biopsies-...
Personalized blood biopsies may provide signal of cancer recurrence
Personalized blood biopsies, which scan patient blood samples for genetic traces of cancer, could potentially provide an earlier warning of metastatic cancer before it is picked up through standard monitoring.
--
https://medicalxpress.com/news/2020-03-kids-mild-covid-symptoms-cha...
Kids get mild COVID-19 symptoms, but chance of transmission high: study
--
https://medicalxpress.com/news/2020-03-babies-baby-universal.html?u...
Babies' love of baby talk is universal, study finds
Mar 17, 2020
Dr. Krishna Kumari Challa
Antibodies from COVID-19 survivors could be used to treat patients, protect those at risk
https://medicalxpress.com/news/2020-03-antibodies-covid-survivors-p...
--
https://theconversation.com/coronavirus-while-pregnant-or-giving-bi...
Coronavirus while pregnant or giving birth: here’s what you need to know
--
Maria Kirch was the first woman to discover a comet, but her husband took the credit
https://massivesci.com/articles/maria-kirch-comet-astronomy-margare...
--
What you’re seeing right now is the past, so your brain is predicting the present
https://theconversation.com/what-youre-seeing-right-now-is-the-past...
--
https://theconversation.com/how-to-flatten-the-curve-of-coronavirus...
How to flatten the curve of coronavirus the mathematics way ...
--
https://www.sciencetimes.com/articles/25033/20200315/when-the-astro...
When the Astronauts Get Sick in Space, What Does NASA Do?
--
https://phys.org/news/2019-07-bacteria.html
How bacteria swim against the flow
Mar 17, 2020
Dr. Krishna Kumari Challa
Call for Applications: 2020 OWSD PhD Fellowships for women scientists in developing countries
https://www.scidev.net/global/content/grants_notice.60043D5B-4B3B-4...
--
https://www.zdnet.com/article/asian-scientists-to-map-blood-cell-ty...
Asian scientists to map blood cell types across five population groups
Scientists from Singapore, South Korea, and Japan will study differences in blood cells across five major Asian population groups, including Chinese, Indian, and Malay, with the aim to understand why some are more susceptible to certain diseases and develop new blood-based diagnostic tests.
--
https://www.nature.com/articles/d41586-020-00769-z
Exposed: cells’ sugary secrets
Emissions of several ozone-depleting chemicals are larger than expected
https://phys.org/news/2020-03-emissions-ozone-depleting-chemicals-l...
--
https://medicalxpress.com/news/2020-03-inflammation-brain-linked-de...
Inflammation in the brain linked to several forms of dementia
Mar 17, 2020
Dr. Krishna Kumari Challa
Knowing why bacteria are great upstream swimmers may prevent serious infections
https://phys.org/news/2020-03-bacteria-great-upstream-swimmers-infe...
--
https://phys.org/news/2020-03-neighbors.html?utm_source=nwletter&am...
Radiation damage spreads among close neighbors
--
https://phys.org/news/2020-03-semiconductors-metals-superconductors...
Semiconductors can behave like metals and even like superconductors
--
https://phys.org/news/2020-03-physicists-filter-blocking-high-pitch...
Need to reduce high-pitched noises? Science may have an answer.
--
https://phys.org/news/2020-03-electrons-scientists-pave-accessible-...
Seeing with electrons: scientists pave the way to more affordable and accessible cryo-EM
--
https://phys.org/news/2020-03-qubits-room-temperature.html?utm_sour...
Qubits that operate at room temperature
--
https://theconversation.com/how-changes-brought-on-by-coronavirus-c...
How changes brought on by coronavirus could help tackle climate change
--
https://techxplore.com/news/2020-03-d-printers-coronavirus-victims....
3-D printers saving the lives of coronavirus victims
Mar 18, 2020
Dr. Krishna Kumari Challa
Why people delay software updates, despite the risks
https://techxplore.com/news/2020-03-people-software.html?utm_source...
--
https://theconversation.com/not-all-young-people-are-digital-native...
Not all young people are ‘digital natives’ – inequality hugely limits experiences of technology
--
https://phys.org/news/2020-03-bacterial-enzyme-antibiotics.html?utm...
Bacterial enzyme could become a new target for antibiotics
--
https://phys.org/news/2020-03-blocking-sugar-viruses-tumor-cells.ht...
Blocking sugar structures on viruses and tumour cells to stop illnesses
--
https://medicalxpress.com/news/2020-03-death-falls.html?utm_source=...
Risk of death from stroke falls by 24%, thanks to medical science. Our evidence to show that science works efficiently.
--
https://medicalxpress.com/news/2020-03-protein-fat-metabolism.html?...
Protein controls fat metabolism
--
https://medicalxpress.com/news/2020-03-covid-coronavirus-epidemic-n...
The COVID-19 coronavirus epidemic has a natural origin, scientists say
The novel SARS-CoV-2 coronavirus that emerged in the city of Wuhan, China, last year and has since caused a large scale COVID-19 epidemic is the product of natural evolution, according to findings published in the journal Nature Medicine.
Mar 18, 2020
Dr. Krishna Kumari Challa
Why gloves and masks are not stopping the corona virus ... because people, still don't have full knowledge about how to fully stop the spread ... according to experts ... we knew this would be the case ...
Wearing masks and gloves as a precaution against coronavirus is ineffective, unnecessary for the vast majority of people, and may even spread infections faster.
wash your hands, don't touch your face, and keep your distance.
The WHO says it is advisable to wear a protective mask in public if you suspect you are infected or someone you are caring for is, in which case the advice is to stay home whenever possible.
"There are limits to how a mask can protect you from being infected and we've said the most important thing everyone can do is wash your hands, keep your hands away from your face, observe very precise hygiene," said WHO's emergencies director Mike Ryan.
experts say masks can give people who wear them a false sense of security.
For example, many people who wear them don't follow the official advice of washing their hands thoroughly first, ensuring it's air tight and not to touch it once it's on.
"People are always readjusting their masks and that has the potential to contaminate them.
"If someone has come across the virus, it's surely going to be on the mask."
Gloves, similarly, don't greatly heighten protection and could even end up making you sick.
"If people cannot stop touching their face, gloves will not serve a purpose.
One 2015 study in the American Journal of Infection Control found that people touch their face on average 20 times an hour.
The novel coronavirus is transmitted via skin contact, transferring infected globules of mucus via the ears, eyes or nose.
"Gloves are not a substitute for washing your hands. "If you're wearing gloves you're not washing your hands."
https://medicalxpress.com/news/2020-03-masks-gloves-dont-coronaviru...
Mar 18, 2020
Dr. Krishna Kumari Challa
9 things you can do every day to limit your exposure to coronavirus
1. Wash your hands at every opportunity with soap and warm water for the recommended 20 seconds. I have observed that most people simply rinse their hands for a few seconds in restrooms, which is not effective in removing viruses. Twenty seconds is the minimum.
2. Avoid handling money. That dollar bill that you get for change could have been in the hands of an infected person just moments before it is placed in your hand. Use credit cards for everything possible, even a cup of coffee.
3. When a signature is required, carry your own pen and never use the same pen that others have already used. Use only the back of your fingernail to scribble a signature on a pad.
4. Use your left hand (if right handed) to open doors and avoid using door knobs entirely whenever possible.
5. Use only a knuckle to push an elevator button and other common push devices. Your little finger knuckle is least likely to be used on your face.
6. Avoid using hand rails unless you are falling. It is common to see people sliding their hand along the rail as they use the steps. Think about how many people have coughed or sneezed before using that same railing.
7. Carry and use a hand sanitizer liberally when in meetings and public places, avoid sharing papers and objects that others have touched.
8. Hold your breath immediately if someone around you sneezes or coughs and then distance yourself by 6 feet.
9. If someone behind you in a line sneezes or coughs, let them in front of you.
These are common sense precautions that you can adopt immediately and make habitual so they happen without thinking about it. Combined with social distancing precautions recommended by experts, these personal precautions can add an important additional layer of protection.
https://medicalxpress.com/news/2020-03-day-limit-exposure-coronavir...
Mar 18, 2020
Dr. Krishna Kumari Challa
Injury to the nose increases risk of bacteria entering the brain
https://medicalxpress.com/news/2020-03-injury-nose-bacteria-brain.h...
--
https://medicalxpress.com/news/2020-03-india-stringent-virus-criter...
India is not doing enough to stop the corona virus spread, according to experts
--
https://medicalxpress.com/news/2020-03-weak-cancer-cells.html?utm_s...
Finding the weak points of cancer cells to control it
--
https://www.nature.com/articles/d41586-020-00154-w?utm_source=Natur...
Coronavirus latest: First vaccine clinical trials begin in United States
Severe brain injuries: technology can tell what patients are thinking – here’s what to consider before using it
--
https://theconversation.com/meet-the-meat-eating-ducks-of-south-geo...
Meet the meat-eating ducks
--
Mar 18, 2020
Dr. Krishna Kumari Challa
How to prepare hand sanitisers at home:
Combine in a bowl,
2/3 cups rubbing alcohol (99.9% isopropyl alcohol)
1/3 cup aloe vera gel
Stir. Decant into a soap or pump bottle
Give it a good shake every now and then.
Aloe vera is a moisturiser that will stop your skin drying out. That’s useful, since cracks in the skin can increase the risk of bacterial infection. The main active ingredient in this sanitiser is the isopropyl alcohol (isopropanol). Most commercial hand sanitisers contain either ethanol, isopropanol, n-propanol or a combination of any two.
Mixtures of 60%-80% alcohol by volume kill microorganisms, so the 66% alcohol concentration in the recipe looks about right if pure rubbing alcohol (also known as “surgical spirits”) is used.
Mixing even the 70% solution with the aloe vera will make the final alcohol concentration too low to be useful.
Although it’s hard to get hold of, pure ethanol could be used in the recipe instead of isopropanol. Ethanol is the alcohol found in spirits, and another homemade sanitiser.
Studies have shown that higher alcohol concentrations work better, and we know that the WHO 75% isopropanol or 80% ethanol formulations can kill other coronaviruses. The homemade products may not be strong enough to inactivate the virus quite as effectively as the WHO formulation. On the other hand, some commercial hand sanitisers contain as little as 57% alcohol, so these homemade products would be better than that.
WHO-recommended concentration:
Three-quarters of a cup of isopropanol and a quarter of a cup of aloe vera gel. You could even substitute glycerol for the aloe vera gel.
https://theconversation.com/homemade-hand-sanitiser-recipes-that-co...
Mar 18, 2020
Dr. Krishna Kumari Challa
Here is a list of 72 Covid-19 testing centers in India
Indian Council of Medical Research has given out a list on its official website of all testing centers of Covid-19.
https://www.indiatoday.in/information/story/list-of-covid-19-testin...
--
*https://news.yale.edu/2020/03/17/deadlier-colon-cancer-develops-dif...
Deadlier colon cancer develops differently in women and men
--
https://www.asianscientist.com/2020/03/in-the-lab/kondo-screening-c...
Elusive Kondo Cloud Seen For The First Time An international team of scientists has observed Kondo clouds, a physical phenomenon first predicted nearly 90 years ago.
--
https://www.the-scientist.com/image-of-the-day/image-of-the-day-sco...
Scorpion Venom for Arthritis: A mouse model of rheumatoid arthritis reveals that a tiny protein in scorpion venom can deliver steroids to affected joints.
--
Study unveils gapless ground state in an archetypal quantum kagome
https://phys.org/news/2020-03-unveils-gapless-ground-state-archetyp...
--
Mar 18, 2020
Dr. Krishna Kumari Challa
One of Darwin's evolution theories finally proved by Cambridge researcher
https://phys.org/news/2020-03-darwin-evolution-theories-cambridge.h...
--
Ancient fish fossil reveals evolutionary origin of the human hand
https://phys.org/news/2020-03-ancient-fish-fossil-reveals-evolution...
--
Mathematicians develop new theory to explain real-world randomness
https://phys.org/news/2020-03-mathematicians-theory-real-world-rand...
--
https://phys.org/news/2020-03-wonderchicken-fossil-age-dinosaurs-re...
'Wonderchicken' fossil from the age of dinosaurs reveals origin of modern birds
--
https://phys.org/news/2020-03-evolution-loners-behaviorat-slime-mol...
Evolution selects for 'loners' that hang back from collective behavior—at least in slime molds
--
https://techxplore.com/news/2020-03-stanford-shape-changing-free-ro...
Engineers create shape-changing, free-roaming soft robot
--
https://phys.org/news/2020-03-unmasking-hidden-killer-successfully-...
Unmasking a hidden killer: Successfully detecting cancer in blood of patients undergoing treatment
--
https://phys.org/news/2020-03-imitation-game-scientists-emulate-qua...
Scientists describe and emulate new quantum state of entangled photons
--
https://phys.org/news/2020-03-frozen-planet-states-exotic-helium-at...
Frozen-planet states in exotic helium atoms
Mar 19, 2020
Dr. Krishna Kumari Challa
Comparisons of organic and conventional agriculture need improvement, say researchers
https://phys.org/news/2020-03-comparisons-conventional-agriculture....
--
https://phys.org/news/2020-03-team-path-razor-sharp-black-hole.html...
Research team discovers path to razor-sharp black hole images
--
https://techxplore.com/news/2020-03-virus-threat-surge-covid-themed...
The other virus threat: Surge in COVID-themed cyberattacks
--
https://techxplore.com/news/2020-03-cyber-hygiene-email-safe-virtua...
Cyber hygiene keeps your email safe from virtual viruses
--
https://phys.org/news/2020-03-maggot-analysis-molecular-forensic-ca...
Maggot analysis goes molecular for forensic cases
--
https://phys.org/news/2020-03-fatal-small-carnivores-drawn-sites.ht...
'Fatal attraction': Small carnivores drawn to kill sites, then ambushed by larger kin
--
*
https://medicalxpress.com/news/2020-03-covid-mortality-outbreak-epi...
COVID-19 mortality was 1.4% in outbreak epicentre: study
Mar 19, 2020
Dr. Krishna Kumari Challa
Bacteria play 'rummy' with genes, biologist shows
https://phys.org/news/2020-03-bacteria-rummy-genes-biologist.html?u...
--
https://phys.org/news/2020-03-birds-canaries-climate-change-coal.ht...
Birds are the 'canaries in the climate-change coal mine'
--
https://phys.org/news/2020-03-whered-genes-individual-growth-vary.h...
Individual growth can vary wildly when populations interbreed
--
https://phys.org/news/2020-03-bacteria-problems-genetic.html?utm_so...
How Bacteria are creating problems for genetic research
--
https://medicalxpress.com/news/2020-03-link-psychosis-omission-chem...
Researchers link psychosis to the omission of chemical rewards in mouse brains
--
https://medicalxpress.com/news/2020-03-blood-platelets-trigger-even...
Blood platelets trigger events that cause organ damage after heart surgery
--
* Could disease pathogens be the dark matter behind Alzheimer's disease?
https://medicalxpress.com/news/2020-03-disease-pathogens-dark-alzhe...
* Where you live may influence your baby's behavior
https://medicalxpress.com/news/2020-03-baby-behavior.html?utm_sourc...
--
Scorpion venom shows promise for treating fetal alcohol spectrum disorder
https://medicalxpress.com/news/2020-03-scorpion-venom-fetal-alcohol...
--
*High levels of iron in the lung linked to increased asthma severity
https://medicalxpress.com/news/2020-03-high-iron-lung-linked-asthma...
Mar 19, 2020
Dr. Krishna Kumari Challa
How to crowd fund your research
https://www.natureindex.com/news-blog/how-to-crowdfund-your-researc...
--
*Termite mounds are helping mineral explorers find hidden metals below
https://blog.csiro.au/heavy-metals-rock-termite-mounds/?utm_source=...
--
https://www.ehn.org/is-bpa-free-plastic-safe-2645509688.html
BPA and babies: Controversial chemical and substitutes pollute the womb
Babies are being exposed to "totally unacceptable concentrations"
--
https://phys.org/news/2020-03-terahertz-quantum.html?utm_source=nwl...
Researchers demonstrate first terahertz quantum sensing
--
A warning to those who eat raw sea food: 'Sushi parasites' have increased 283-fold in past 40 years
https://phys.org/news/2020-03-sushi-parasites-fold-years.html?utm_s...
--
https://phys.org/news/2020-03-molecules-self-assemble-superstructur...
How molecules self-assemble into superstructures
--
https://phys.org/news/2020-03-carbon-tropical-forests-absorb.html?u...
Shedding light on how much carbon tropical forests can absorb
Mar 19, 2020
Dr. Krishna Kumari Challa
Opening plastic bags and bottles may generate microplastics
Opening plastic bags and bottles may generate microplastics: everyday activities such as opening plastic bags and bottles, wrappers could be additional sources of small quantities of microplastics in the environment.
https://phys.org/news/2020-03-plastic-bags-bottles-microplastics.ht...
--
https://phys.org/news/2020-03-cosmic-clocks-reveal-evolution-stars....
Ticking cosmic clocks reveal the evolution of stars over millions of years
--
*
https://phys.org/news/2020-03-dark-massive-galaxies.html?utm_source...
Dark matter and massive galaxies
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https://techxplore.com/news/2020-03-drone-dodgeballand.html?utm_sou...
Drone that can play dodgeball—and win
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How humans are teaching AI to become better at second-guessing
https://techxplore.com/news/2020-03-humans-ai-second-guessing.html?...
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https://phys.org/news/2020-03-coronavirus-kits-rna-imaging-technolo...
Coronavirus testing kits to be developed using new RNA imaging technology
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Study investigates evolution during Cambrian Explosion
Scientists have argued that features defining animal body plans have become increasingly elaborate through time such that they become burdened by their own complexity. This burden could prevent change and would explain the lack of new phyla since the Cambrian Explosion.
https://phys.org/news/2020-03-evolution-cambrian-explosion.html?utm...
Mar 20, 2020