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Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
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Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Eating carrots will improve your eyesight. Carrots are high in vitamin A (retinol), which is essential for good vision. It can also be found in milk, cheese, egg yolks, and liver.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.