An unprotected human can survive up to 1.5 minutes in space with no permanent bodily damage.
82
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
29