This week’s new questions
Is sitting bad in itself or is it just because it prevents us doing exercise? And a question about energy transfer involving a spring and a bath of acid
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Why do biscuits go soft and cakes go hard?
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Does a large meal make you tired, and if so, why?
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This week’s new questions
How long before all human traces are wiped out?
What is the carbon payback period for a wind turbine?
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How can a tree reabsorb its own branch?
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This week’s new questions
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How does water hydrate us?
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Why do dogs and horses roll on their backs when happy?
Dogs roll for three reasons, horses for one, say readers. But they don't do it because they are happy
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This week’s new questions
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Far-sighted: How can some people see at great distance?
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This week’s new questions
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