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How can seeds germinate after thousands of years of dormancy? Q: If a seed is planted in the ground even after lakhs of years, the plant will sprout.. But how did that seed manage to hide life within i… Started by Dr. Krishna Kumari Challa	1	Jan 25 Reply by Dr. Krishna Kumari Challa
The science of laughing and crying Q: Does laughing really help people? Krishna: My reply is going to surprise you. You might have heard this… In modern society, fierce compe… Started by Dr. Krishna Kumari Challa	2	Jan 23 Reply by Dr. Krishna Kumari Challa
Mom's X chromosome could speed up brain aging Women are born with two X chromosomes and inherit one from each parent. But in every cell of their body, just one X chromosome is needed—s… Started by Dr. Krishna Kumari Challa	1	Jan 23 Reply by Dr. Krishna Kumari Challa
Human use of fire has produced an era of uncontrolled burning: Welcome to the Pyrocene Los Angeles is burning, but it isn't alone. In recent years, fires have blasted through cities in Colorado, the southern Appalachians and… Started by Dr. Krishna Kumari Challa	1	Jan 23 Reply by Dr. Krishna Kumari Challa
Sport Science - your best bet to beat competition when used in a correct and legal way How can you achieve these targets in sport: "Faster, Higher, Stronger"? Very often people in this part of the world wonder why some develop… Started by Dr. Krishna Kumari Challa	17	Jan 21 Reply by Dr. Krishna Kumari Challa
Wildfires ignite infection risks by weakening the body's immune defenses and spreading bugs in smoke Over the past several days, the world has watched on in shock as wildfires have devastated large parts of Los Angeles. Beyond the obvious… Started by Dr. Krishna Kumari Challa	1	Jan 17 Reply by Dr. Krishna Kumari Challa
Rewrite the textbooks: Damage to RNA, not DNA, found to be main cause of acute sunburn! We have all been told to avoid direct sunlight between 12 noon and 3 p.m., seek out shade and put on sunscreen and a hat. Nevertheless, mos… Started by Dr. Krishna Kumari Challa	1	Jan 17 Reply by Dr. Krishna Kumari Challa
Study shows hot leaves can't catch carbon from the air. It's bad news for rainforests—and Earth On the east coast of Australia, in tropical North Queensland, lies the Daintree rainforest—a place where the density of trees forms an almo… Started by Dr. Krishna Kumari Challa	1	Jan 16 Reply by Dr. Krishna Kumari Challa
Baseless beliefs Vs informed imagination (or educated guessing) Sometime back a rationalist was killed in Maharashtra (Indian State) for educating people about the truth of witchcraft. We had a discussio… Started by Dr. Krishna Kumari Challa	2	Jan 15 Reply by Dr. Krishna Kumari Challa
Firefighting planes are dumping ocean water on the Los Angeles fires. Why using saltwater is typically a last resort Firefighters battling the deadly wildfires that raced through the Los Angeles area in January 2025 have been hampered by a limited supply o… Started by Dr. Krishna Kumari Challa	1	Jan 14 Reply by Dr. Krishna Kumari Challa