By weight, Bone is five times stronger than steel.
417
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
If your DNA was stretched out it would reach to the moon 6,000 times.
256
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
One quarter of the bones in your body are in your feet!
36
There are more bacteria in your mouth than there are people in the world.
60
Our brains have a negativity bias and will remember bad memories more than good ones.
15
If you unfolded your brain, it would cover an ironing board.
42