Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.
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More than 150,000 Americans killed by cardiovascular disease are younger than the age of 65 years.
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Atropine, along with scopolamine and hyoscyamine, is found in the Datura stramonium plant, which gives hallucinogenic effects and is also known as locoweed.
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In 1864, the first barbiturate (barbituric acid) was synthesized.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
The extent of acid rain in the United States has decreased.