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Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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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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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.