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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Malaria was not eliminated in the United States until 1951. The term eliminated means that no new cases arise in a country for 3 years.
Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
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?
There are 20 feet of blood vessels in each square inch of human skin.