Hourglass figure: Why do wasps have such narrow waists?
There is an evolutionary advantage to wasps' narrow waists, as readers explain
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Getting used to it: How do we acclimatise to different temperatures?
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This week鈥檚 new questions
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The adventures of a geologist: From shipwrecks to mapping the Arctic
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Life
Tree of life: Giant baobab turned into living water tank in Madagascar
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Space
The Leonid meteor shower peaks this week: Here’s how to see it
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Using the space-time continuum to make it rain and other odd claims
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Cold feat: Why is a freezer door hard to open just after you shut it?
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Sitting pretty: sitting is harmful, but how exactly is it bad?
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This week鈥檚 new questions
Can we put cameras inside trucks to prevent migrant deaths, and is there any benefit to stopping smoking late in life? All contributions welcome
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Technology
Google scientist has a surprising tip to improve any search
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Physics
The plucky probe that put the big bang theory to the test
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Technology
How to watch Mercury’s transit of the sun with just binoculars
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How to read 20,000 words a minute, and more unbelievable claims
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