Our brains have a negativity bias and will remember bad memories more than good ones.
15
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
A man's beard grows fastest when he anticipates sex.
239
By weight, Bone is five times stronger than steel.
417
On average a woman has 4 sexual partners in her lifetime.
-143
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
A human being loses an average of 40 to 100 strands of hair a day.
133