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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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Asthma cases in Americans are about 75% higher today than they were in 1980.
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Illicit drug use costs the United States approximately $181 billion every year.
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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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As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.