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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.
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The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.
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The largest baby ever born weighed more than 23 pounds but died just 11 hours after his birth in 1879. The largest surviving baby was born in October 2009 in Sumatra, Indonesia, and weighed an astounding 19.2 pounds at birth.
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More than 2,500 barbiturates have been synthesized. At the height of their popularity, about 50 were marketed for human use.