What makes the slipperiness of slides vary so much from day to day?
The variation in slipperiness of slides in children鈥檚 playgrounds could be due to clothing, wetness or even ice-cream, according to our readers
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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)
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This week鈥檚 new questions
What shape would a candle flame be in zero gravity? Plus: It is often stated that the human brain is the most complex object in the universe, but is it more complex than, say, Earth鈥檚 biosphere?
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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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This week鈥檚 new questions
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