Stephen Hawking once tried to find potential time travellers by throwing a party and only sending out invitations after the party.
17
Each day, up to 150 species of life become extinct.
-23
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
The smell of freshly cut grass is actually a plant distress call.
31
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
The average temperature at 40,000 feet above sea level is -60 F.
56
Balsa wood is classified as a hard wood!
41