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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?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Intradermal injections are somewhat difficult to correctly administer because the skin layers are so thin that it is easy to accidentally punch through to the deeper subcutaneous layer.
Did you know?
People about to have surgery must tell their health care providers about all supplements they take.
Did you know?
Human stomach acid is strong enough to dissolve small pieces of metal such as razor blades or staples.