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There are approximately 3 million unintended pregnancies in the United States each year.
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.
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.
On average, someone in the United States has a stroke about every 40 seconds. This is about 795,000 people per year.