Neanderthal man had a brain capacity 100cc larger than modern man's.
50
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
In zero gravity, a candle's flame is round and blue.
16
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
There are more than 270 people cryogenically frozen in the hope that one day the technology will exist that can revive them and extend their lives.
13
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5