Mind
Is my frequent laughter damaging my credibility at work?
Our advice columnist David Robson looks into the science of how we react to laughter
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How do I know if what I see is actually there?
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Could aliens work out if a human or an ape built a tomb? Part 2
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This week’s new questions
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Could this be the way to get your children to eat their greens?
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Tom Gauld on the way to deal with tardiness
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Twisteddoodles on difficult experiments
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Chemistry
The science behind tempering chocolate
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Looking for morbid romance? There’s a study for that
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Do cells in an astronaut’s body multiply at the same rate as on Earth?
It’s all relative, say our readers - for the astronaut, they do, but compared with someone staying on Earth, they don’t. Just listen to Albert Einstein
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What happens when a hammer hits a nail?
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This week’s new questions
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Life
Stunning photos of life above and below water
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Tom Gauld on how scientists mingle at a drinks party
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