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What are expiry dates for medicines? Q: When tablets are prepared under harsh conditions, what happens to drugs in the tablets after the expiry date? How is it decided? Kris… Started by Dr. Krishna Kumari Challa	1	Nov 15, 2022 Reply by Dr. Krishna Kumari Challa
Science and Spirituality - Part 2 More Qs people asked me on this subject and my replies: Q: Dr. Krishna, after reading your article on 'science and spirituality' and much c… Started by Dr. Krishna Kumari Challa	1	Nov 14, 2022 Reply by Dr. Krishna Kumari Challa
How climate change affects our health Deadlier than COVID, or even rivalling cancer? Researchers have been increasingly attempting to calculate the effect climate change will ha… Started by Dr. Krishna Kumari Challa	1	Nov 14, 2022 Reply by Dr. Krishna Kumari Challa
Four common misconceptions about quantum physics Quantum mechanics, the theory which rules the microworld of atoms and particles, certainly has the X factor. Unlike many other areas of phy… Started by Dr. Krishna Kumari Challa	1	Nov 13, 2022 Reply by Dr. Krishna Kumari Challa
An 'artificial photosynthesis' system ten times more efficient than existing systems For the past two centuries, humans have relied on fossil fuels for concentrated energy; hundreds of millions of years of photosynthesis pac… Started by Dr. Krishna Kumari Challa	1	Nov 12, 2022 Reply by Dr. Krishna Kumari Challa
High blood pressure linked to 22% greater risk of severe COVID – new research From early on in the pandemic it was apparent that older adults and those with underlying health problems were more likely to get very sick… Started by Dr. Krishna Kumari Challa	1	Nov 11, 2022 Reply by Dr. Krishna Kumari Challa
Personality differences from day one after birth despite identical genes and identical environment According to current knowledge, personality is determined by genetic predisposition and environmental influences. If genetically identical… Started by Dr. Krishna Kumari Challa	1	Nov 10, 2022 Reply by Dr. Krishna Kumari Challa
A technologically advanced society is choosing to destroy itself As world leaders assemble for the United Nations climate change conference (COP27) in Egypt, it’s hard to be optimistic the talks will gene… Started by Dr. Krishna Kumari Challa	1	Nov 9, 2022 Reply by Dr. Krishna Kumari Challa
Acoustics: How sounds are transmitted And how our brains perceive them .... Recently we organized a 'secret party' for our uncle and aunty who were celebrating their 50th weddin… Started by Dr. Krishna Kumari Challa	1	Nov 9, 2022 Reply by Dr. Krishna Kumari Challa
COP27 : What is it and why should you care? COP27 is the 27th Conference of the Parties (countries) that signed up to the United Nations Framework Convention on Climate Change. The co… Started by Dr. Krishna Kumari Challa	1	Nov 5, 2022 Reply by Dr. Krishna Kumari Challa