My hair has a kink. How do the hairs know exactly where to bend?
Readers debate whether hair curls are down to genetics, the shape of folicles or the way we sleep or brush
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What is the smallest number with no interesting properties? (cont’d)
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This week鈥檚 new questions
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The pick of the strange science that won Ig Nobel prizes this year
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Tom Gauld spots a sticky situation
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Twisteddoodles on the reality of 21st century fashion
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Life
Animals at London zoo get their annual weigh-in
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Humans
Why cutting down on digging the garden can actually be good for soil
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Why are there seven colours in a rainbow?
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Why do snails sometimes leave dotted trails?
Researchers and readers write in to explain why snails sometimes leave dotted trails. The researchers have taken it seriously and the readers have mostly made jokes
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This week鈥檚 new questions
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Humans
When two grown men squared off over the size of their trajectories
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Life
Amazing images make New Scientist Photography Awards 2021 shortlist
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Tom Gauld on a very cautious scientist
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