Take a look at the portion of North Dakota highlighted in this image. That isn’t a city, and those lights weren’t there 6 years ago…
That’s the burning of natural gas from oil fracking rigs.
http://www.npr.org/blogs/krulwich/2013/01/16/169511949/a-mysterious-patch-of-light-shows-up-in-the-north-dakota-dark
“From your orbital perspective, you can see that something has unmistakably gone wrong. The dominant organisms, whoever they are—who have gone to so much trouble to rework the surface—are simultaneously destroying their ozone layer and their forests, eroding their topsoil, and performing massive, uncontrolled experiments on their planet’s climate. Haven’t they noticed what’s happening? Are they oblivious to their fate? Are they unable to work together on behalf of the environment that sustains them all?
Perhaps, you think, it’s time to reassess the conjecture that there’s intelligent life on Earth.” - Carl Sagan, Pale Blue Dot
Tell Congress You Want To Preserve & Cherish The Pale Blue Dot:
http://www.penny4nasa.org/take-action/