Why do we groan or say 鈥榦hoo鈥� when we sit down or stand up?
Are the groaning sounds that we sometimes make when undertaking a physical activity a cultural convention or is there a physiological reason? Readers respond
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If plants communicate via their roots, do they get lonely in pots?
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We often see dead foxes on our farm and they just decompose in situ. So, does anything eat foxes? (continued)
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This week鈥檚 new questions
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Why do different kinds of hair react differently to heat and moisture?
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What is the biological advantage of crying when emotional?
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How do food packaging companies decide how tight to make the lids on jars? Has this increased over time or am I just getting older? (continued)
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This week鈥檚 new questions
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Why do I always sneeze twice?
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Can you get triple or quadruple rainbows?
I have seen many double rainbows, but do triple or quadruple ones exist? If so, where is the best place to see them, and what is the maximum number that could exist?
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Why hasn鈥檛 evolution given us eyes in the back of our head (continued)?
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This week鈥檚 new questions
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Do any species of bird hiccup? If so, why would they do this?
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How much of the movement of clouds is due to Earth鈥檚 rotation?
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