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Did you know?
The human body produces and destroys 15 million blood cells every second.
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?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
Asthma cases in Americans are about 75% higher today than they were in 1980.
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.