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Did you know?
The average adult has about 21 square feet of skin.
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There are approximately 3 million unintended pregnancies in the United States each year.
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Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
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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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Approximately 500,000 babies are born each year in the United States to teenage mothers.