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Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
The word drug comes from the Dutch word droog (meaning "dry"). For centuries, most drugs came from dried plants, hence the name.
Did you know?
There are 20 feet of blood vessels in each square inch of human skin.
Did you know?
Giardia is one of the most common intestinal parasites worldwide, and infects up to 20% of the world population, mostly in poorer countries with inadequate sanitation. Infections are most common in children, though chronic Giardia is more common in adults.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.