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
One cubic foot of gold weighs more than 1,200 pounds!
78
For every gallon of sea water, you get more than a quarter pound of salt.
45
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
Pure water (H2O) does not conduct electricity on its own.
46
Columbia University has developed an artificial tree that passively soaks up carbon dioxide from the air using "leaves" that are 1,000 times more efficient than true leaves that use photosynthesis.
15
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
In the 1950s, the US government placed beer next to an atomic bomb blast to determine if it was still drinkable. The result: in the event of a nuclear war, beer is safe to drink!
16