Balsa wood is classified as a hard wood!
41
One cubic foot of gold weighs more than 1,200 pounds!
78
Nuclear power prevented an average of over 1.8 million deaths between 1971-2009 as a result of lower air pollution from reduced coal usage according to NASA.
5
Pumice is the only rock that floats on water.
14
MIT has developed a camera that captures the speed of light at a trillion frames per second.
20
Nearly 50% of the world's scientists are assigned to military projects.
71
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310