Iron weighs more after it rusts.
16
The storage capacity of human brain exceeds 4 Terrabytes.
140
One third of the electricity produced on earth is used to power electric light bulbs!
75
One barrel of petroleum holds 42 gallons.
20
The bark of an older redwood tree is fireproof.
65
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
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39