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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
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The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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More than 50% of American adults have oral herpes, which is commonly known as "cold sores" or "fever blisters." The herpes virus can be active on the skin surface without showing any signs or causing any symptoms.
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Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
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The average office desk has 400 times more bacteria on it than a toilet.