Aluminum used to be more valuable than gold!
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Billions of neutrinos pass unnoticed through your body every second.
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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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Stannous fluoride, which is the cavity fighter found in toothpaste is made from recycled tin.
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A cubic yard of air weighs about 2 pounds at sea level.
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According to studies, men change their minds two to three times more often than women.
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One cubic foot of gold weighs more than 1,200 pounds!
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For every gallon of sea water, you get more than a quarter pound of salt.
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