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Did you know?
Human kidneys will clean about 1 million gallons of blood in an average lifetime.
Did you know?
The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.
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?
Approximately 500,000 babies are born each year in the United States to teenage mothers.
Did you know?
Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.