The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
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If the chemical sodium is dropped into water it will immediately and violently explode.
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Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
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For every gallon of sea water, you get more than a quarter pound of salt.
45
The Earth's atmosphere weighs about 5.5 quadrillion tons.
108
Aluminum used to be more valuable than gold!
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Scientists at the Zhejiang University in China have developed an ultra-light material known as carbon aerogel.
3
The force of a suction cup is calculated using F=AP.
15