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.
15
At room temperature, the average air molecule travels at the speed of a rifle bullet.
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One third of the electricity produced on earth is used to power electric light bulbs!
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Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
Each day, up to 150 species of life become extinct.
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Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Most dust particles in your house are made from dead skin!
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