Sitting pretty: sitting is harmful, but how exactly is it bad?
It turns out sitting and inactivity have multiple detrimental effects. But there are easy ways to combat them too, as a reader explains
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This week鈥檚 new questions
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Why do some people like science and others don鈥檛?
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Coil conversion: on the energy of a compressed spring in acid
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This week鈥檚 new questions
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Could Jupiter ever ignite into a star?
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Why does my brain like fictional stories?
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This week鈥檚 new questions
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Could you change Earth鈥檚 rotation by all running at the same time?
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Swimming strokes: which is the fastest?
A continuation of the question about the speed and energy efficiency of swimming strokes. One reader points out which stroke is fastest
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This week鈥檚 new questions
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In the ink: why are blue highlighter markers less bright than others?
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Good consumers: is online shopping greener than going into town?
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This week鈥檚 new questions
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