Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Unconsciousness will occur after 8-10 seconds after loss of blood supply to the brain.
93
For most people, no matter how hard you pinch the skin on your elbow with your fingers it doesn't hurt.
515
The human brain has the capacity to store everything that you experience.
4k
One human hair can support 3 ounces.
191
On average, a human being will have sex more than 3,000 times and spend two weeks kissing in their lifetime.
161
Human hair and fingernails continue to grow after death.
7