This week鈥檚 new questions
How can crocodiles retain muscle strength when they are still for long periods? And how can an infinite universe have come from a finite original state?
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What makes the slipperiness of slides vary so much from day to day?
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Taking near-boiling water off the hob immediately creates steam. Why?
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This week鈥檚 new questions
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Why are there more consonants than vowels in alphabetic languages?
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Why do wagtails constantly wag their tails?
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This week鈥檚 new questions
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Does belief confer an evolutionary advantage?
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Does Earth鈥檚 magnetic field affect the weather?
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Do any other animals have an awareness of their mortality? (Part 2)
It鈥檚 human chauvinism to assume not, argues one reader, and another shares his experience of how his dogs respond to death
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This week鈥檚 new questions
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What is it that provides the healing effect of a placebo treatment?
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Do birds ever get out of breath?
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What is the weird mussel-like thing found in a mine?
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