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Did you know?
Most childhood vaccines are 90–99% effective in preventing disease. Side effects are rarely serious.
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?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
If all the neurons in the human body were lined up, they would stretch more than 600 miles.
Did you know?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.