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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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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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The longest a person has survived after a heart transplant is 24 years.
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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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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.