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Did you know?
The immune system needs 9.5 hours of sleep in total darkness to recharge completely.
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The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.
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Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
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There are more sensory neurons in the tongue than in any other part of the body.
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Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.