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Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.
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.
There are more bacteria in your mouth than there are people in the world.
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
Green tea is able to stop the scent of garlic or onion from causing bad breath.