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Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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There are more bacteria in your mouth than there are people in the world.
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In 1844, Charles Goodyear obtained the first patent for a rubber condom.
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The most dangerous mercury compound, dimethyl mercury, is so toxic that even a few microliters spilled on the skin can cause death. Mercury has been shown to accumulate in higher amounts in the following types of fish than other types: swordfish, shark, mackerel, tilefish, crab, and tuna.
Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.