The human brain doesn't stop developing until about 25 years old.
102
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
Only 1% of bacteria cause disease.
45
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
The first patented condom was meant to be reused!
47
The average person can live for eleven days without water, assuming an average temperature of 60 degrees fahrenheit.
15
Every hour one billion cells in the body must be replaced.
17