Beef with tofu: is local beef better for the planet than tofu imports?
It might sound like eating beef from a nearby farm is not so bad for the environment, but the latest research has some revealing answers
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Clean limbs: the debate continues on whether you should wash your legs
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This week’s new questions
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Schrödinger’s scissors: Why can’t we see things right in front of us?
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Future fossils: Will new coal and oil reserves form once we’re gone?
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This week’s new questions
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Special effects: What creates stripes and colours in the sky?
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A key question: The secrets and security of a rotor-style lock
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This week’s new questions
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Lucky dip: What’s the best strategy for winning the lottery?
Is it better to buy 52 lottery tickets in one week, or one each week for a year? Readers respond with their strategies
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Itchy and scratchy: why doesn’t a mosquito bite stop being itchy?
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This week’s 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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