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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?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Aspirin is the most widely used drug in the world. It has even been recognized as such by the Guinness Book of World Records.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.
Did you know?
Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).