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Although puberty usually occurs in the early teenage years, the world's youngest parents were two Chinese children who had their first baby when they were 8 and 9 years of age.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Your heart beats over 36 million times a year.