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Did you know?
Sperm cells are so tiny that 400 to 500 million (400,000,000–500,000,000) of them fit onto 1 tsp.
Did you know?
Fungal nail infections account for up to 30% of all skin infections. They affect 5% of the general population—mostly people over the age of 70.
Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
Did you know?
The average adult has about 21 square feet of skin.
Did you know?
This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.