![](https://earthdesk.blogs.pace.edu/files/2013/07/alternative_energy_revolutionhttp-_xkcd.com_556_.jpg)
By Randall Munroe, XKCD. Licensed under a Creative Commons Attribution-NonCommercial 2.5 License.
EarthDesk regularly follows xkcd.com, the webcomic offspring of the fertile mind of Randall Munroe
Here is more about the illusive Randall in The New York Times.