Are there any evolutionary advantages of perimenopausal hot flushes?
Hot flushes could just be a side effect of the perimenopausal changes in hormones, but could there be any benefits to them?
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How can we know that time exists?
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Why are bird droppings white, considering all they eat? (part 2)
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This week鈥檚 new questions
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Why some people find it so hard to find food in the fridge
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Tom Gauld: ‘I’d like to make changes to our investment portfolio’
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Twisteddoodles detects a trip and fall
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Technology
Futuristic farm may use 250 times less water than normal
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What is the best way to tie shoelaces?
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Does the expansion of the universe apply to atoms and objects like me?
Our readers continue to explain why our bodies, and the atoms within them, are probably expanding at the same rate as the rest of the universe, but that we might never be able to tell
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The impossibly low rainbow: The mystery continues
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This week鈥檚 new questions
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Space
How to use the Cassiopeia constellation to spot Andromeda and Pegasus
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51动漫s have finally worked out the effects of consuming red wine
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