The human sigh acts as a physiological reset button.
23
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
On average a woman has 4 sexual partners in her lifetime.
-143
The average person will go on a date at least 100 times before they finally marry.
33
The human brain is very soft, having a consistency similar to soft gelatin or firm tofu.
13
Pet dogs and elephants are the only animals that seem to instinctively understand human gesture.
14
A third of the human population sneezes when they look at the Sun. Light can signal the ocular nerve near the sinuses and triggers a sneeze.
18