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Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
On average, the stomach produces 2 L of hydrochloric acid per day.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.