A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
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
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
Because heat expands the metal, the Eiffel Tower always leans away from the sun.
79
Scientists concluded that the chicken came first, not the egg, because the protein which makes the egg shells is only produced by hens.
11