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Of the estimated 2 million heroin users in the United States, 600,000–800,000 are considered hardcore addicts. Heroin addiction is considered to be one of the hardest addictions to recover from.
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The average office desk has 400 times more bacteria on it than a toilet.
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
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In 1835 it was discovered that a disease of silkworms known as muscardine could be transferred from one silkworm to another, and was caused by a fungus.