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Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.
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The shortest mature adult human of whom there is independent evidence was Gul Mohammed in India. In 1990, he was measured in New Delhi and stood 22.5 inches tall.
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The longest a person has survived after a heart transplant is 24 years.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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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.