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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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It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
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About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.
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The average office desk has 400 times more bacteria on it than a toilet.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.