If you unfolded your brain, it would cover an ironing board.
42
Perspiration is odorless; it is the bacteria on the skin that creates an odor.
39
Although African-Americans make up only 13% of the U.S. population, they accounted for one half of the estimated new HIV/AIDS diagnoses in 2004.
70
Your body is creating and killing 15 million red blood cells per second.
50
Men have larger hearts; women's hearts beat faster.
77
Only 1% of bacteria cause disease.
45