Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
If Earth's life was compressed into 1 year, then humans would have been around for only 2 seconds.
15
Every human spent about half an hour as a single cell.
144
The average person will go on a date at least 100 times before they finally marry.
33
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Coughing can cause air to move through your windpipe faster than the speed of sound - over a thousand feet per second!
197
The human brain doesn't stop developing until about 25 years old.
102
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22