One out of 20 people have an extra rib.
66
Research indicates that babies who suck on pacifiers are more prone to ear aches.
21
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
If you are bitten by a poisonous snake, and fail to receive medical attention, you still have a 50% chance of survival.
28
35,000 people in the U.S. will die from the flu annually.
6
In older people, memory is best early in the morning and then declines during the late afternoon.
33
When you kiss someone for the first time, you get a spike in the neurotransmitter dopamine, making you crave more.
23