0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Aluminum used to be more valuable than gold!
84
Sound travels about 4 times faster in water than in air.
408
A single speck of dust is half way in size between a subatomic particle and the Earth.
15
The average temperature at 40,000 feet above sea level is -60 F.
56
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
A ball of glass will bounce higher than a ball made of rubber.
73
According to studies, men change their minds two to three times more often than women.
72