If the chemical sodium is dropped into water it will immediately and violently explode.
67
Hot water can freeze faster than cold water.
181
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Indoor pollution is 10 times more toxic than outdoor pollution.
62
A cesium atom in an atomic clock beats over nine billion times a second.
43
Blue eyes are a genetic mutation. Before the mutation occured, all humans had brown eyes.
89
Most dust particles in your house come from dead skin.
48
The bark of an older redwood tree is fireproof.
65