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Did you know?
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
If you could remove all of your skin, it would weigh up to 5 pounds.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.