A million dollars weighs about a metric ton. Hence the expression "a ton of money."
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The Main Library at Indiana University sinks over an inch every year because when it was built, engineers failed to take into account the weight of all the books that would occupy the building.
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Sex burns about 360 calories per hour.
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Fidgeting can burn about 350 calories a day.
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The adult human brain weighs about 3 pounds (1,300-1,400 g).
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The average person's skin weighs twice as much as their brain.
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One human hair can support 3 ounces.
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The earth is approx. 6,588,000,000,000,000,000 tons.
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