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Did you know?
The human body produces and destroys 15 million blood cells every second.
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?
Asthma cases in Americans are about 75% higher today than they were in 1980.
Did you know?
The heart is located in the center of the chest, with part of it tipped slightly so that it taps against the left side of the chest.
Did you know?
Excessive alcohol use costs the country approximately $235 billion every year.