The right lung takes in more air than the left.
30
Bearing a male child can alter a woman's brain by leaving male DNA that can persist for the rest of her life, making her less likely to suffer from Alzheimer's disease, promote tissue repair, and improve her immune system.
16
The human brain is more active during sleep than during the day.
28
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 average tastebud lives only 10 days before it dies and is replaced by a new one.
15
It is possible to go blind from smoking too heavily.
50
Medical research has found substances in mistletoe that can slow down tumor growth.
32
You have no sense of smell when you're sleeping!
72