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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?
Hippocrates noted that blood separates into four differently colored liquids when removed from the body and examined: a pure red liquid mixed with white liquid material with a yellow-colored froth at the top and a black substance that settles underneath; he named these the four humors (for blood, phlegm, yellow bile, and black bile).
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
Did you know?
Thyroid conditions cause a higher risk of fibromyalgia and chronic fatigue syndrome.