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The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

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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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In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.

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People with alcoholism are at a much greater risk of malnutrition than are other people and usually exhibit low levels of most vitamins (especially folic acid). This is because alcohol often takes the place of 50% of their daily intake of calories, with little nutritional value contained in it.

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Thyroid conditions may make getting pregnant impossible.

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Historical timeline of regulatory acts, standards, and organizations. Historical timeline of regulatory acts, standards, and organizations.
Early-maturing boys tend to be advantaged because they often fit cultural ideals of masculinity. Early-maturing boys tend to be advantaged because they often fit cultural ideals of masculinity.
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Video: Types of Burns

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