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.
Methane leaks threaten to undermine the environmental benefits of fracking natural gas, reports Brad Plumer at The Washington Post's WonkBlog.
Plumer offers suggestions on how to fix the leaks: "Notice that there’s no definitive number for how much methane is actually leaking. 'There’s a lot of variability in these studies,' explains James Bradbury, one of the co-authors of the WRI paper, in an interview. 'It can vary from region to region, from basin to basin. It often depends on the operators involved.'
"And the current estimate by the Environmental Protection Agency that leakage is only around 2.4 percent is essentially an educated guess, based on a number of assumptions rather than direct measurements.
"So, as a first step to getting a handle on this problem, the paper recommends that the EPA develop much more comprehensive measurements of actual leakage. That won’t be easy — there are half a million natural-gas wells around the country, and hundreds of thousands of miles of pipeline — but it’s a key first step."
The full story is here.