Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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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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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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At 15 years old, Jack Andraka invented a method of diagnosing pancreatic cancer, thus helping to save the lives of millions of people around the world. It is 168 times faster, 26,000 times cheaper, 400 times more sensitive, and has a 99% success rate.
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One third of the electricity produced on earth is used to power electric light bulbs!
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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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One ragweed plant can release as many as one billion grains of pollen!
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