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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
The average office desk has 400 times more bacteria on it than a toilet.
Did you know?
It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.
Did you know?
The oldest recorded age was 122. Madame Jeanne Calment was born in France in 1875 and died in 1997. She was a vegetarian and loved olive oil, port wine, and chocolate.
Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.