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Did you know?
The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.
Did you know?
The familiar sounds of your heart are made by the heart's valves as they open and close.
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About 100 new prescription or over-the-counter drugs come into the U.S. market every year.
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Illicit drug use costs the United States approximately $181 billion every year.
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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.