There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
Your heart will pump about 212 million liters in its lifetime.
26
Human hair and fingernails continue to grow after death.
7
It takes approximately 12 hours for food to entirely digest.
93
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
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132