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
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Yawns are more contagious among people with closer relationships.
163
After age 30, the brain shrinks a quarter of a percent (0.25%) in mass each year.
139
The adult human brain weighs about 3 pounds (1,300-1,400 g).
99
Shark corneas are used in eye transplants and shark bone marrow can be used to graft human bones.
132
Mushrooms are more closely related to humans than they are to plants.
47
In 30 minutes, the average body gives off enough heat (combined) to bring a half gallon of water to boil.
198