A sneeze can travel as fast as 100 miles per hour.
43
The largest cell in the human body is the female egg and the smallest is the male sperm.
682
It takes about 20 seconds for a red blood cell to circle the whole body.
102
There's a new vaccine for alcoholism that gives drinkers an immediate and harsh hangover, even if they drink a small amount of booze.
14
The human body contains over a billion miles of DNA.
147
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
Sitting straight upright in your chair is bad for your back. You should instead slouch at an angle of 135 degrees.
10