The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
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Today, nearly 8 out of 10 pregnant women living with HIV (about 1.1 million), receive antiretrovirals.
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This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.
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There are more nerve cells in one human brain than there are stars in the Milky Way.
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Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.
Deimos in color on February 21, 2009 by the same (not to scale)
Common Prefixes Used to Name Tumors
Dark Green Eye Color
Some of the common structural abnormalities seen in chromosomes. (a) In a deletion, part of a chromo