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Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.
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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.
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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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Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.