The average temperature at 40,000 feet above sea level is -60 F.
56
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
According to studies, men change their minds two to three times more often than women.
72
One cubic foot of gold weighs more than 1,200 pounds!
78
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Indoor pollution is 10 times more toxic than outdoor pollution.
62
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44