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Did you know?
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
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If all the neurons in the human body were lined up, they would stretch more than 600 miles.
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Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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About 3% of all pregnant women will give birth to twins, which is an increase in rate of nearly 60% since the early 1980s.
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About 600,000 particles of skin are shed every hour by each human. If you live to age 70 years, you have shed 105 pounds of dead skin.