Pain occurs when sounds are above 130 db.
124
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Some monks can increase their body temperature so much they can dry soaking sheets in a freezing room!
31
Only humans shed emotional tears.
331
Every human spent about half an hour as a single cell.
144
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
We share 70% of our DNA with a slug.
218
You forget 90% of your dreams.
256