Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
You can't tickle yourself.
29
If the human eye was a digital camera, it would have 576 megapixels.
25
It is possible for you to survive even after the removal of the spleen, the stomach, one kidney, one lung, 75% of the liver, 80% of the intestines, and almost every organ from the pelvic and groin area.
218
The average person's skin weighs twice as much as their brain.
131
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
The human sigh acts as a physiological reset button.
23
A person will create enough saliva to fill two average size swimming pools during his lifetime.
191