Mind fuel: Can you think yourself thinner?
Is it possible to burn calories by thinking really hard? The answer depends on how much energy your brain uses
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This week鈥檚 new questions
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Poetic prediction: Is there any truth to the ‘red sky at night’ adage?
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Come clean: What’s the difference between shampoo and shower gel?
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This week’s new questions
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Camera precaution: what can be done to stop migrant deaths in lorries?
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Kicking the habit: is there any point stopping smoking in later life?
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This week鈥檚 new questions
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Twit or true: are owls really intelligent?
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Number games: how to choose a PIN
Does it matter if your PIN is randomly generated or a memorable number like your birthday? Readers respond
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This week’s new questions: all about mulberries
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Burning hot: Are all flames the same temperature?
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Dead before his time: a question about time travel
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This week鈥檚 new questions
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