51动漫

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Space

The Orion Nebula is now visible in the sky – here鈥檚 how to find it

From November to February, the Orion Nebula can be seen with the naked eye. But with a pair of binoculars you can get a much more detailed view, says Abigail Beall

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Why do different kinds of hair react differently to heat and moisture?

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What is the biological advantage of crying when emotional?

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How do food packaging companies decide how tight to make the lids on jars? Has this increased over time or am I just getting older? (continued)

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This week鈥檚 new questions

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Will unboxing videos mixed with ASMR be the latest PR craze?

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Tom Gauld on sounds that would make you leave a laboratory

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Twisteddoodles predicts the likelihood of extremely unlikely events

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Humans

The weirdest food pairings that work according to science

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Why do I always sneeze twice?

I never sneeze only once and rarely get three in. Is there a reason for this pattern?

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Can you get triple or quadruple rainbows?

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Why hasn鈥檛 evolution given us eyes in the back of our head (continued)?

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This week鈥檚 new questions

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61 weird and wonderful ways to measure a building with a smartphone

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