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In 2012, nearly 24 milliion Americans, aged 12 and older, had abused an illicit drug, according to the National Institute on Drug Abuse (NIDA).
The human body produces and destroys 15 million blood cells every second.
Approximately 15–25% of recognized pregnancies end in miscarriage. However, many miscarriages often occur before a woman even knows she is pregnant.
In 1864, the first barbiturate (barbituric acid) was synthesized.
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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