The earth is approx. 6,588,000,000,000,000,000 tons.
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Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
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Aluminum used to be more valuable than gold!
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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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Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
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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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The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
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One cubic foot of gold weighs more than 1,200 pounds!
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