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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Nylon is made from coal and petroleum.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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Pumice is the only rock that floats on water.
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Scientists are working on a portable spray-on-skin that can heal severe wounds in just a few minutes.The spray mainly contains important proteins that can reprogram the injured cells to become stem cells, and back to young uniformed skin cells. So far they were able to accelerate healing process from 12 weeks to 21 days with a similar approach.
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