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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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Green tea is able to stop the scent of garlic or onion from causing bad breath.
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About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.
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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.