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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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It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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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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More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.