In zero gravity, a candle's flame is round and blue.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
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Most dust particles in your house are made from dead skin!
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Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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Galalith is a type of plastic that can be made from milk. It is odourless, insoluble in water, biodegradable, anti-allergenic, antistatic, and virtually non-flammable.
1