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Science Simplified! Discussions (1,841)

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How does food move in an astronaut's digestive tract without gravity? Q: How does peristalsis move food without gravity? Krishna: Yes, how does food move in an astronaut's digestive tract? When we think a… Started by Dr. Krishna Kumari Challa	1	Jul 8 Reply by Dr. Krishna Kumari Challa
Why do the different blood groups have different gut flora? Q: Why do the different blood groups have different gut flora? Can you explain this for all blood groups? Krishna: Sure! In humans, the gu… Started by Dr. Krishna Kumari Challa	1	Jul 8 Reply by Dr. Krishna Kumari Challa
Global review confirms mRNA vaccines are safe, effective and full of promise A sweeping global review by researchers has found that mRNA vaccines—now administered billions of times worldwide—are safe and highly effe… Started by Dr. Krishna Kumari Challa	1	Jul 2 Reply by Dr. Krishna Kumari Challa
Serial Polyembryony Q: Apart from surrogacy, can a grand mother give birth to her grand children naturally? Krishna: Serial polyembryony is a rare reproductiv… Started by Dr. Krishna Kumari Challa	1	Jul 1 Reply by Dr. Krishna Kumari Challa
Bones communicate with the rest of the body to support overall health: Here's the science behind your skeleton Each year, doctors treat more than 6 million bone fractures in the United States. And while it takes only a few seconds for a bone to break… Started by Dr. Krishna Kumari Challa	1	Jun 30 Reply by Dr. Krishna Kumari Challa
Fruit Flies are tiny creatures but can make you sick if you are not careful Q: Rainy season is back. So are fruit flies. We hear about flies making us sick. But Can fruit flies make people sick if they touch your… Started by Dr. Krishna Kumari Challa	1	Jun 29 Reply by Dr. Krishna Kumari Challa
Venezuela was struck by an earthquake 'doublet' On Wednesday (this week) evening just after 6 p.m. local time, two earthquakes violently shook northern Venezuela. The first one struc… Started by Dr. Krishna Kumari Challa	1	Jun 26 Reply by Dr. Krishna Kumari Challa
Why pneumonia treatments sometimes fail Pneumonia Image credit: Mayo clinic research Pneumonia is the most common infectious cause of death worldwide, responsible for an est… Started by Dr. Krishna Kumari Challa	1	Jun 24 Reply by Dr. Krishna Kumari Challa
No, Jamun trees cannot predict about future droughts Q: Several people are saying Kaala Jamun (neredu) knows about the impending drought conditions and therefore produces immense amount of fru… Started by Dr. Krishna Kumari Challa	1	Jun 22 Reply by Dr. Krishna Kumari Challa
The difference between freshwater and saltwater drownings Q: What is the difference between freshwater and saltwater drownings? Krishna: Drowning occurs when the respiratory tract is blocked by… Started by Dr. Krishna Kumari Challa	1	Jun 21 Reply by Dr. Krishna Kumari Challa