This week鈥檚 new questions
When you wash a duvet cover, why does other washing end up inside it? Germs accumulate under our nails, but they rarely cause infections, so does a natural antibacterial protect the area?
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Why don鈥檛 worms harm plant roots when they stir up soil?
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Why do some hairs stop growing while others keep going?
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This week鈥檚 new questions
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Why didn’t babies evolve to allow parents to get more sleep?
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Is our sense of new smells keener? What’s the evolutionary benefit of this?
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This week’s new questions
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What’s the difference between an electric and a magnetic field?
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How much cloud cover is there? Readers give their answers
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This week鈥檚 new questions
Can there be certain genes that are associated with a dislike of certain tastes? And how wide can a tree grow? Send us your answers and we will publish our favourites
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Can you make your own homebrew decaffeinated tea?
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Does a kettle boil quicker if you shake it?
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This week鈥檚 new questions
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Is there an evolutionary benefit to being bald?
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