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Why vaccination response differs in people COVID-19 vaccine responses show four patterns, with 'rapid-decliners' at higher infection risk Two health care workers get COVID-19 vaccina… Started by Dr. Krishna Kumari Challa	1	Sep 18, 2025 Reply by Dr. Krishna Kumari Challa
Why did some birds become flightless? How did the ostrich cross the ocean? We have long been puzzled by how the family of birds that includes African ostriches, Australian emu… Started by Dr. Krishna Kumari Challa	1	Sep 18, 2025 Reply by Dr. Krishna Kumari Challa
Culture is overtaking genetics in shaping human evolution, some researchers argue Research suggests that cultural evolution has become increasingly influential, sometimes even outstripping the rate and impact of genetic… Started by Dr. Krishna Kumari Challa	1	Sep 16, 2025 Reply by Dr. Krishna Kumari Challa
The very certainty that science progresses with time should be the basis for trust, not the other way round. Q: Why do people say you can't trust science because it changes, and how does that contrast with religious beliefs? Krishna: “Because… Started by Dr. Krishna Kumari Challa	1	Sep 14, 2025 Reply by Dr. Krishna Kumari Challa
Maternal gut microbiome composition and preterm births Maternal gut microbiome composition may be linked to preterm births People associate several things regarding pregnancy to eclipses and oth… Started by Dr. Krishna Kumari Challa	1	Sep 11, 2025 Reply by Dr. Krishna Kumari Challa
Our understanding of lightning has been driven by fear and shaped by curiosity Playwright Tom Stoppard, in "Rosencrantz and Guildenstern are Dead," provides one of the best definitions of science: "The scientific… Started by Dr. Krishna Kumari Challa	1	Sep 9, 2025 Reply by Dr. Krishna Kumari Challa
The words ‘Just believing’ are not there in the dictionaries of science Q: Why do some people find comfort in the idea of being "recycled" into nature rather than believing in an afterlife? Krishna: Because… Started by Dr. Krishna Kumari Challa	1	Sep 6, 2025 Reply by Dr. Krishna Kumari Challa
Don't blame the criminals for everything they do Don't blame the criminals for everything they do. A suspected perpetrator who can barely remember his name, several traffic violations com… Started by Dr. Krishna Kumari Challa	1	Sep 2, 2025 Reply by Dr. Krishna Kumari Challa
How animals get drunk Q: Do animals drink alcohol? Krishna: In nature, plants don’t produce ethanol directly. Instead, it’s made primarily by the yeast Saccharom… Started by Dr. Krishna Kumari Challa	1	Aug 24, 2025 Reply by Dr. Krishna Kumari Challa
Hight-salt diet sparks brain inflammation that could explain stubborn high blood pressure Image source: Adobe stock A new study finds that a high-salt diet triggers brain inflammation that drives up blood pressure. The researc… Started by Dr. Krishna Kumari Challa	1	Aug 20, 2025 Reply by Dr. Krishna Kumari Challa