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Did you know?
There are approximately 3 million unintended pregnancies in the United States each year.
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?
It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.
Did you know?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
The ratio of hydrogen atoms to oxygen in water (H2O) is 2:1.