Balsa wood is classified as a hard wood!
41
A coal power station puts 100 times more radiation into the air than a nuclear power plant producing the same amount of energy.
7
One cubic foot of gold weighs more than 1,200 pounds!
78
The earth is approx. 6,588,000,000,000,000,000 tons.
175
Research indicates that plants grow healthier when they are stroked.
173
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
Most dust particles in your house come from dead skin.
48
Marie Curie, the Nobel prize winning scientist who discovered radium, died of radiation poisoning.
57