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Did you know?
Blood is approximately twice as thick as water because of the cells and other components found in it.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Adult head lice are gray, about ? inch long, and often have a tiny dot on their backs. A female can lay between 50 and 150 eggs within the several weeks that she is alive. They feed on human blood.
Did you know?
As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.
Did you know?
The first documented use of surgical anesthesia in the United States was in Connecticut in 1844.