Chesapeake Energy Corp,the Oklahoma-based firm is the No. 1 driller in Ohio.
Rig Count Interactive Map by Baker Hughes, an energy services company.
Shale Sheet Fracking, a Youngstown Vindicator blog.
The Ohio Environmental Council, a statewide eco-group based in Columbus.
Earthjustice, a national eco-group.
People's Oil and Gas Collaborative-Ohio, a grass-roots group in Northeast Ohio.
Concerned Citizens of Medina County, a grass-roots group.
No Frack Ohio, a Columbus-based grass-roots group.
Fracking: Gas Drilling's Environmental Threat by ProPublica, an online journalism site.
Pipeline, blog from Pittsburgh Post-Gazette on Marcellus shale drilling.
Allegheny Front, environmental public radio for Western Pennsylvania.
Chrystia Freeland, editor of Thomson Reuters Digital, says it is likely the world faces an oil glut, not peak oil.
She writes in part: "Forget America’s fiscal cliff, Europe’s currency troubles or the emerging-markets slowdown. The most important story in the global economy today may well be some good news that isn’t yet making as many headlines – the coming surge in oil production around the world.
"Until very recently, our collective assumption was that oil was running out. That was partly a matter of what seemed like geological common sense. ... Obvious – but wrong. Thanks in part to technologies like horizontal drilling and hydraulic fracking, we are entering a new age of abundant oil.
"...Four countries will lead the coming oil boom: Iraq, the United States, Canada and Brazil.
"Much of the “new” oil is coming on-stream thanks to a technology revolution that has put hard-to-extract deposits within reach: Canadian oil sands, U.S. shale oil, Brazilian presalt oil."
Read the full column here.