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Did you know?
There are more nerve cells in one human brain than there are stars in the Milky Way.
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The human body produces and destroys 15 million blood cells every second.
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There are 20 feet of blood vessels in each square inch of human skin.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
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More than 20 million Americans cite use of marijuana within the past 30 days, according to the National Survey on Drug Use and Health (NSDUH). More than 8 million admit to using it almost every day.