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Did you know?
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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Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
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The average office desk has 400 times more bacteria on it than a toilet.
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In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.
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After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.