Hot water can freeze faster than cold water.
181
A cesium atom in an atomic clock beats over nine billion times a second.
43
In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
39
Nearly 50% of the world's scientists are assigned to military projects.
71
Optical illusions occur when what the eyes see conflicts with what the brain expects.
75
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11