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Did you know?
Vaccines prevent between 2.5 and 4 million deaths every year.
Did you know?
Medication errors are more common among seriously ill patients than with those with minor conditions.
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?
Egg cells are about the size of a grain of sand. They are formed inside of a female's ovaries before she is even born.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.