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Did you know?
Cyanide works by making the human body unable to use oxygen.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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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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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
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Your heart beats over 36 million times a year.