This week鈥檚 new questions
Why do aerosol cans suddenly turn cold when they run out? And why does a round coin rolling down a hill stay upright, whereas a 鈥渟quare鈥� coin sliding down a slope soon falls over?
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Tom Gauld on creating life
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Twisteddoodles on baby’s first feed
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Comment
Striking photo of lone tree is stark warning about Bolivia鈥檚 future
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Comment
How to make perfect tempura at home
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Is it more sustainable to flush a tissue or put it in the bin?
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Why is teething so painful for babies but not growth of second teeth?
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Why is the left hand used for intricate violin fingerwork? (Part 3)
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This week鈥檚 new questions
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Scaring up scary ways to scare birds
Feedback looks at a variety-show approach to let crops grow in noisy, blinding peace
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Tom Gauld on magic mirrors
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Twisteddoodles on chemical reactions
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Earth
Stunning image of erupting volcano reminds us of Earth鈥檚 violent past
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Life
Why putting broken pottery in your plant pot won’t help with drainage
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