Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
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There's a new vaccine for alcoholism that gives drinkers an immediate and harsh hangover, even if they drink a small amount of booze.
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The average person's skin weighs twice as much as their brain.
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During a typical human life span, the human heart will beat approximately 2.5 billion times.
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Scientists estimate that laughing 100 times is equivalent to a 10-minute workout on a rowing machine.
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Our eyes are always the same size from birth, but our nose and ears never stop growing.
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The record for the longest scientifically documented period without sleep is 264.4 hours (eleven days).
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