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
Your spit has a painkiller 6 times stronger than morphine. It contains a substance called opiorphin that is stronger than morphine.
39
Kissing releases masses of oxytocin, a "love potion" that helps couples bond and feel more attracted to each other.
13
On average, there's 100 billion neurons in the human brain.
83
It takes approximately 12 hours for food to entirely digest.
93
The brain can stay alive for 4 to 6 minutes without oxygen. After that cells begin die.
193
Dating back to the 1600's, thermometers were filled with Brandy instead of mercury.
16
A new parent will lose about 1055.6 hours of sleep in the first year of their child's life - almost 44 days!
6