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Did you know?
There are 60,000 miles of blood vessels in every adult human.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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?
Since 1988, the CDC has reported a 99% reduction in bacterial meningitis caused by Haemophilus influenzae, due to the introduction of the vaccine against it.