For every gallon of sea water, you get more than a quarter pound of salt.
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Balsa wood is classified as a hard wood!
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Aluminum used to be more valuable than gold!
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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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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The average temperature at 40,000 feet above sea level is -60 F.
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During photosynthesis, plants emit light humans can’t see, but NASA can see that light from space - and they've even made maps of it!
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