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In 1864, the first barbiturate (barbituric acid) was synthesized.
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The familiar sounds of your heart are made by the heart's valves as they open and close.
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Each year in the United States, there are approximately six million pregnancies. This means that at any one time, about 4% of women in the United States are pregnant.
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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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According to the FDA, adverse drug events harmed or killed approximately 1,200,000 people in the United States in the year 2015.