Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Iron weighs more after it rusts.
68
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
A cubic yard of air weighs about 2 pounds at sea level.
31
When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
199
Most liquid laundry detergents are alive with living organisms that help to break down stains!
88