Some informational graphics on powering the planet with renewables.
Reposted From RahSolar
According to the United Nations 170,000 square kilometers of forest is destroyed each year. If we constructed solar farms at the same rate, we would be finished in 3 years.
There are 1.2 million square kilometers of farmland in China. This is 2 1/2 times the area of solar farm required to power the world in 2030.
The first link contains the science behind all the others.