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How indoor air can be purified naturally Today morning I got a message from an artist-cum-businessman friend of mine. He was actually trying to sell me an air purifier! With the po… Started by Dr. Krishna Kumari Challa	2	Feb 28 Reply by Dr. Krishna Kumari Challa
Decades of air pollution undermine the immune system, lymph nodes study finds The diminished power of the immune system in older adults is usually blamed on the aging process. But a new study by immunologists shows t… Started by Dr. Krishna Kumari Challa	2	Feb 28 Reply by Dr. Krishna Kumari Challa
Epigenetic echoes: Violence can leave genetic marks on future generations Epigenetic mechanisms; Image source: Wikipedia In 1982, the Syrian government besieged the city of Hama, killing tens of thousands of i… Started by Dr. Krishna Kumari Challa	1	Feb 28 Reply by Dr. Krishna Kumari Challa
Scientific era is the best, if you can live in it correctly, that is! Q: Our elders say, earlier, before the onset of the scientific era, people used to live very happily. Science changed all that. Now people… Started by Dr. Krishna Kumari Challa	1	Feb 24 Reply by Dr. Krishna Kumari Challa
You cannot separate science from this universe, never! Q: Erwin Schrodinger said: I am very astonished that the scientific picture of the real world around me is deficient. It gives a lot of fac… Started by Dr. Krishna Kumari Challa	1	Feb 24 Reply by Dr. Krishna Kumari Challa
The Physics behind the Delta Flight 4819 flip over It was a dramatic and unusual sight: a Delta Air Lines passenger jet crash-landed on Monday (this week) at Toronto Pearson International… Started by Dr. Krishna Kumari Challa	1	Feb 21 Reply by Dr. Krishna Kumari Challa
How to defend Earth from dangerous asteroids Asteroids are rocky-metallic objects which range in size from about the size of pebbles to around 600 miles (~1,000 km) across. Visitors… Started by Dr. Krishna Kumari Challa	6	Feb 21 Reply by Dr. Krishna Kumari Challa
What is 'double pneumonia'? Pope Francis has been in hospital for more than a week with what some media reports are now calling "double pneumonia." The Vatican rel… Started by Dr. Krishna Kumari Challa	1	Feb 20 Reply by Dr. Krishna Kumari Challa
Fingerprints as forensic tools Q: What are the sciences related to fingerprinting? Krishna: One of my closest friends is a forensic scientist. She deals with DNA finge… Started by Dr. Krishna Kumari Challa	1	Feb 19 Reply by Dr. Krishna Kumari Challa
Forensic science: How Microbial fingerprints can help solve a crime Image source: https://www.forensicsciencesimplified.org/prints/how.html When you think of a criminal investigation, you might picture det… Started by Dr. Krishna Kumari Challa	1	Feb 19 Reply by Dr. Krishna Kumari Challa