A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Pure water (H2O) does not conduct electricity on its own.
46
4.5 pounds of sunlight strike the Earth each day.
27
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
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
A cubic yard of air weighs about 2 pounds at sea level.
31
The bark of an older redwood tree is fireproof.
65