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
On average, there's 100 billion neurons in the human brain.
83
If you are cold you are more likely to be hungry because you use energy to keep warm.
143
The pupil of the eye expands as much as 45 percent when a person looks at something pleasing.
130
After an 11 year study, cell phones were shown not to increase chances of getting cancer.
14
If you were to roll a lung from a human body and out flat it would be the size of a tennis court.
36
About half of all Americans are on a diet on any given day.
29
Only 1% of bacteria cause disease in humans!
2