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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The earth is approx. 6,588,000,000,000,000,000 tons.
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There are more atoms in one teaspoon of water than there are teaspoons of water in the Atlantic Ocean.
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0.3% of solar energy from the Sahara is enough to power the whole of Europe.
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Brass doorknobs automatically disinfect themselves in about 8 hours.
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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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Sound travels about 4 times faster in water than in air.
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MIT has developed a camera that captures the speed of light at a trillion frames per second.
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