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Did you know?
Illicit drug use costs the United States approximately $181 billion every year.
Did you know?
The horizontal fraction bar was introduced by the Arabs.
Did you know?
Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).
Did you know?
Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.
Did you know?
There are 60,000 miles of blood vessels in every adult human.


