Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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According to research, pregnant women tend to eat more if carrying a baby boy. Male fetuses may secrete a chemical that stimulates their mothers to step up her energy intake.
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Between 1999 and 2012, American adults with high total cholesterol decreased from 18.3% to 12.9%
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
Change in Drawing Abilities from Early to Middle Childhood Drawings become more realistic as fine m
Frederick Douglass, having escaped from slavery in 1836, attracted large audiences as an antislavery