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Cyanide works by making the human body unable to use oxygen.
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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.
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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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Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.
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On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.