Why are animals stripy and why can’t humans have patterned hair?
Stripes and spots in animals explained, plus a suggestion for why humans don't have them
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This week’s new questions
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What鈥檚 better for the environment, using a hand dryer or paper towels?
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What happens to the energy of a moving car when it hits a wall?
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This week’s questions
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Why do cars have speed limits 鈥� is it physics or just practicality?
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Why is toast so different from bread heated in a microwave?
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This week鈥檚 new questions
Core subject: how does Earth’s magnetic field arise?
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Why does the jet stream affect our weather?
A reader wanted to know the difference between the Gulf stream's effect on weather and climate, and that of the jet stream. Find out the answer
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This week’s new questions
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Has all the hardware sent into space affected Earth鈥檚 gravity?
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Kissed by a human or licked by an animal: which has more disease risk?
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Does your fringe grow faster than the hair on the rest of your head?
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