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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The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.
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The horizontal fraction bar was introduced by the Arabs.
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There are 20 feet of blood vessels in each square inch of human skin.
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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
This portrait of Thomas Jefferson is considered an accurate likeness, painted when he was thirty-sev
Observed Mother–Child Arguments at Five Time Points Over an Eight-Year Period