Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
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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.
5
The average temperature at 40,000 feet above sea level is -60 F.
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The Earth's atmosphere weighs about 5.5 quadrillion tons.
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Hot water can freeze faster than cold water.
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The earth is approx. 6,588,000,000,000,000,000 tons.
175
The force of a suction cup is calculated using F=AP.
15
Aluminum used to be more valuable than gold!
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