Iron weighs more after it rusts.
16
For every gallon of sea water, you get more than a quarter pound of salt.
45
0.3% of solar energy from the Sahara is enough to power the whole of Europe.
310
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
One third of the electricity produced on earth is used to power electric light bulbs!
75
Scientists have developed a microparticle filled with oxygen that can be injected into the blood stream, enabling us to live without breathing.
21
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