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Did you know?
There are more bacteria in your mouth than there are people in the world.
Did you know?
Pope Sylvester II tried to introduce Arabic numbers into Europe between the years 999 and 1003, but their use did not catch on for a few more centuries, and Roman numerals continued to be the primary number system.
Did you know?
A good example of polar molecules can be understood when trying to make a cake. If water and oil are required, they will not mix together. If you put them into a measuring cup, the oil will rise to the top while the water remains on the bottom.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
In 1844, Charles Goodyear obtained the first patent for a rubber condom.