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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?
Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.