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Did you know?
The first-known contraceptive was crocodile dung, used in Egypt in 2000 BC. Condoms were also reportedly used, made of animal bladders or intestines.
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Computer programs are available that crosscheck a new drug's possible trade name with all other trade names currently available. These programs detect dangerous similarities between names and alert the manufacturer of the drug.
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Vaccines prevent between 2.5 and 4 million deaths every year.
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When blood is exposed to air, it clots. Heparin allows the blood to come in direct contact with air without clotting.
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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.