Absolute zero is the lowest temperature but is there an upper limit?
Yes, there is a highest possible temperature, but calculating it isn鈥檛 straightforward, explain our readers
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What is the difference between a cake, a sponge and a biscuit?
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Grinning is a sign of aggression in animals, so why do humans smile?
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This week鈥檚 new questions
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Are there any evolutionary advantages of perimenopausal hot flushes?
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How can we know that time exists?
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Why are bird droppings white, considering all they eat? (part 2)
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This week鈥檚 new questions
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What is the best way to tie shoelaces?
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Does the expansion of the universe apply to atoms and objects like me?
Our readers continue to explain why our bodies, and the atoms within them, are probably expanding at the same rate as the rest of the universe, but that we might never be able to tell
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The impossibly low rainbow: The mystery continues
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This week鈥檚 new questions
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Does talking or singing to plants help them to grow better?
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Could humans evolve into two different species in the future?
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