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Can 'miracle' heaters really warm your home for pennies? The physics says no Claims that portable electric heaters can heat homes for pennies or rapidly warm entire houses are not supported by physics. All electric h… Started by Dr. Krishna Kumari Challa	1	Dec 19, 2025 Reply by Dr. Krishna Kumari Challa
Superkilonova Q: What is superkilonova? Krishna: A superkilonova is a hypothesized, extremely powerful cosmic event involving two explosions: a massive… Started by Dr. Krishna Kumari Challa	1	Dec 18, 2025 Reply by Dr. Krishna Kumari Challa
Sport Science: How cricket balls move - The science behind swing, seam and spin If you've ever watched a batter get beaten by a ball that curved, jagged or dipped at the last moment, you've seen one of cricket's great… Started by Dr. Krishna Kumari Challa	1	Dec 18, 2025 Reply by Dr. Krishna Kumari Challa
The rise of sinkholes: How to spot the risks before disaster strikes You trust the road beneath your tires. But what if that trust is misplaced? Sinkholes are increasingly turning ordinary streets into… Started by Dr. Krishna Kumari Challa	1	Dec 16, 2025 Reply by Dr. Krishna Kumari Challa
Mad cow disease: A new culprit beyond prions Recent research by scientists challenges the belief that mad cow disease is caused only by misfolded proteins—a discovery that sheds new… Started by Dr. Krishna Kumari Challa	1	Dec 14, 2025 Reply by Dr. Krishna Kumari Challa
Exercise slows tumour growth in mice by shifting glucose uptake to muscles Several people ask this question: If cancer cells feed on sugars, why can’t we reduce sugar intake in cancer patients to control it? (1, 2)… Started by Dr. Krishna Kumari Challa	1	Dec 14, 2025 Reply by Dr. Krishna Kumari Challa
Epigenetics linked to high-altitude adaptation in Andes DNA sequencing technology makes it possible to explore the genome to learn how humans adapted to live in a wide range of environments. Res… Started by Dr. Krishna Kumari Challa	1	Dec 14, 2025 Reply by Dr. Krishna Kumari Challa
How microplastics harm your brain Microplastics could be fueling neurodegenerative diseases like Alzheimer's and Parkinson's, with a new study highlighting five ways micropl… Started by Dr. Krishna Kumari Challa	1	Dec 14, 2025 Reply by Dr. Krishna Kumari Challa
Some Qs. people asked me on science and my replies to them - Part 31 Interactive science series Q: What are the disadvantages of doing DIRECT… Started by Dr. Krishna Kumari Challa	4	Dec 1, 2025 Reply by Dr. Krishna Kumari Challa
New mutation hotspot discovered in human genome Researchers have discovered new regions of the human genome particularly vulnerable to mutations. These altered stretches of DNA can be pas… Started by Dr. Krishna Kumari Challa	1	Dec 1, 2025 Reply by Dr. Krishna Kumari Challa