The hair of an adult man or woman can stretch 25 percent of its length without breaking.
116
The average home creates more pollution than does the average car.
33
Neanderthal man had a brain capacity 100cc larger than modern man's.
50
A cubic yard of air weighs about 2 pounds at sea level.
31
Brass doorknobs automatically disinfect themselves in about 8 hours.
18
Iron weighs more after it rusts.
16
Cellophane is not made of plastic. It is made from a plant fiber, cellulose, which has been shredded and aged.
44
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20