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There are approximately 3 million unintended pregnancies in the United States each year.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
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