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 average temperature at 40,000 feet above sea level is -60 F.
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Scientists have revived a flowering plant from a fruit stored away in permafrost by Arctic ground squirrel 32,000 years ago.
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One third of the electricity produced on earth is used to power electric light bulbs!
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One 75-watt bulb gives more light than three 25-watt bulbs.
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Balsa wood is classified as a hard wood!
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