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Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."
Cytomegalovirus affects nearly the same amount of newborns every year as Down syndrome.
More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
There are approximately 3 million unintended pregnancies in the United States each year.
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