One cubic foot of gold weighs more than 1,200 pounds!
78
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
Indoor pollution is 10 times more toxic than outdoor pollution.
62
The only letter not appearing on the Periodic Table is the letter "J".
180
4.5 pounds of sunlight strike the Earth each day.
27
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
One 75-watt bulb gives more light than three 25-watt bulbs.
57