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What is an infectious dose of viral particles? Q: Dr. Krishna, can one or two viral particles cause an infection? Krishna: That depends. The average number of viral particles needed to… Started by Dr. Krishna Kumari Challa	1	Apr 3, 2020 Reply by Dr. Krishna Kumari Challa
Why do we feel false sensations of hot and cold on our tongues and in our mouth Q: Why do curries made of chillies taste very hot ? Krishna: Yes, chillies are hot while mint is cold. Our nervous system is packed with r… Started by Dr. Krishna Kumari Challa	1	Apr 3, 2020 Reply by Dr. Krishna Kumari Challa
What are science, scientific method, and scientific temper? Q: How many versions of the scientific method are there? Are some better than others? Krishna: The scientific method is a convenient… Started by Dr. Krishna Kumari Challa	3	Apr 2, 2020 Reply by Dr. Krishna Kumari Challa
Why microalgae is a better food Microalgae or microphytes are fast growing, photosynthetic microorganisms that can convert light and carbon dioxide into a range of unique… Started by Dr. Krishna Kumari Challa	1	Apr 2, 2020 Reply by Dr. Krishna Kumari Challa
New interesting information -2 2 meters enough for social distancing? MIT researcher says droplets carrying coronavirus can travel up to 8 meters The novel coronavirus h… Started by Dr. Krishna Kumari Challa	1	Apr 2, 2020 Reply by Dr. Krishna Kumari Challa
New interesting information - 1 The beauty of science revealed once again ... Left brain - right brain controversy: New interesting light thrown on brain's working People… Started by Dr. Krishna Kumari Challa	1	Apr 2, 2020 Reply by Dr. Krishna Kumari Challa
Why we ourselves are responsible for the deadly disease outbreakes According to experts, humans are creating the conditions for the spread of diseases by reducing the natural barriers between virus host ani… Started by Dr. Krishna Kumari Challa	2	Apr 1, 2020 Reply by Dr. Krishna Kumari Challa
Qs people asked me on science and my replies to them - Part 178 Q: What is contact tracing and how does it help in stopping the spread of a disease? Krishna: Contact tracing which when combined with soc… Started by Dr. Krishna Kumari Challa	1	Mar 30, 2020 Reply by Dr. Krishna Kumari Challa
Qs people asked me on science and my replies to them - Part 177 Q; How come we tend to get crossover viruses from bats and pigs, but not cats and dogs who we're much more in contact with? Krishna: Sp… Started by Dr. Krishna Kumari Challa	1	Mar 29, 2020 Reply by Dr. Krishna Kumari Challa
Qs people asked me on science and my replies to them -part 176 Q: Is Covid-19 is a biological weapon? What is the different opinion made by scientist or researchers on this statement? Krishna: No it… Started by Dr. Krishna Kumari Challa	1	Mar 28, 2020 Reply by Dr. Krishna Kumari Challa