Itchy and scratchy: why doesn’t a mosquito bite stop being itchy?
What is it about mosquito bites that means they stay itchy even when you scratch them? A reader responds
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This week鈥檚 new questions
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How far do we travel through the universe in our lifetimes?
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Why does menthol give me a cold sensation in my nose?
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This week’s questions
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Clucking dinosaurs
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Foam over
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This week鈥檚 new questions
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Why are some foods delicious to some people and disgusting to others?
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Does having flowers in hospital wards harm patients鈥� health?
Flowers emit carbon dioxide, and a reader asks if that鈥檚 why they are often moved from hospital wards at night. But it seems their true risk lies elsewhere
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This week鈥檚 new questions
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What causes the fresh smell before a storm?
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Clean limbs: should you wash your legs?
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This week鈥檚 new questions
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