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Did you know?
Your heart beats over 36 million times a year.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
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?
About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.