We are told 鈥渆at your greens鈥�, but are these essential for our diet?
One reader extolls the virtues of eating green plants, whereas another argues that you can get the same nutrition from other sources
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Why are the lichens distributed in this way on this sign (pictured)?
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This week鈥檚 new questions
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Why does the H sound get dropped in some languages?
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Why, or how, do winds gust?
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Do menthol nasal decongestants still work if you can鈥檛 smell them?
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This week鈥檚 new questions
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Does microwaved food taste inferior to that cooked conventionally?
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What has caused this amazing multicoloured leaf pattern? (pictured)
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This week鈥檚 new questions
How and where was water created? And why do we believe in many things with no solid evidence?
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Why does music evoke certain emotions, even if it doesn鈥檛 have lyrics?
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How many humans would there be if agriculture hadn鈥檛 been invented?
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This week鈥檚 new questions
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If Earth were flat, when would a ship disappear from sight?
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