Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Obsessive nose picking is called Rhinotillexomania.
101
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
22
The human brain uses approximately as much energy as a 10 watt light bulb.
120
Your fingernails grow faster in summer.
744
We forget why we have entered a room because passing through doors creates an ‘event boundary’ causing the brain to file away what we were just thinking about.
26
