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There are more nerve cells in one human brain than there are stars in the Milky Way.

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There are 60,000 miles of blood vessels in every adult human.

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Blood in the urine can be a sign of a kidney stone, glomerulonephritis, or other kidney problems.

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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.

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The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

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