The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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The sun is 330,330 times larger than the earth.
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At room temperature, the average air molecule travels at the speed of a rifle bullet.
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Pumice is the only rock that floats on water.
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Most dust particles in your house are made from dead skin!
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For every gallon of sea water, you get more than a quarter pound of salt.
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The smell of freshly cut grass is actually a plant distress call.
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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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