Enamel is hardest substance in the human body.
61
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23
According to a 1950s survey, 75% of men ejaculate within two minutes of penetration.
109
It is possible to go blind from smoking too heavily.
50
Crying literally alleviates stress and uniquely allows humans to decrease feelings of anger and sadness.
24
Household bleach is the recommended chemical to decontaminate people exposed to the anthrax virus, by the U.S. F.D.A.
16
It takes about 20 seconds for a red blood cell to circle the whole body.
102
There is a disease called ichthyosis that turns the skin scaly like a fish.
90