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Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Everyone has one nostril that is larger than the other.
Did you know?
In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
Did you know?
Prostaglandins were first isolated from human semen in Sweden in the 1930s. They were so named because the researcher thought that they came from the prostate gland. In fact, prostaglandins exist and are synthesized in almost every cell of the body.