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There are approximately 3 million unintended pregnancies in the United States each year.
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The highest suicide rate in the United States is among people ages 65 years and older. Almost 15% of people in this age group commit suicide every year.
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Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
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Earwax has antimicrobial properties that reduce the viability of bacteria and fungus in the human ear.
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The immune system needs 9.5 hours of sleep in total darkness to recharge completely.