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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Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
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Each day, up to 150 species of life become extinct.
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4.5 pounds of sunlight strike the Earth each day.
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Indoor pollution is 10 times more toxic than outdoor pollution.
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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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The force of a suction cup is calculated using F=AP.
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In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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