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Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Green tea is able to stop the scent of garlic or onion from causing bad breath.
Did you know?
More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.
Did you know?
About 100 new prescription or over-the-counter drugs come into the U.S. market every year.


