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Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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People with high total cholesterol have about two times the risk for heart disease as people with ideal levels.
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Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.
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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.
Did you know?
The modern decimal position system was the invention of the Hindus (around 800 AD), involving the placing of numerals to indicate their value (units, tens, hundreds, and so on).

