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Asthma cases in Americans are about 75% higher today than they were in 1980.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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The average office desk has 400 times more bacteria on it than a toilet.
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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.
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Before a vaccine is licensed in the USA, the Food and Drug Administration (FDA) reviews it for safety and effectiveness. The CDC then reviews all studies again, as well as the American Academy of Pediatrics and the American Academy of Family Physicians. Every lot of vaccine is tested before administration to the public, and the FDA regularly inspects vaccine manufacturers' facilities.