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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You burn 26 calories in a one minute kiss.
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A hummingbird weighs less than a penny.
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The 1 yen coin can be used as a weight, because it weighs exactly one gram. Also, it can float on water.
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The average person's skin weighs twice as much as their brain.
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The cat brain weighs about 30g.
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