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.
Shale is creating "Saudi Texas," people in the energy industry and elsewhere are saying.
Fuel Fix writes: "The Lone Star State is earning a new moniker: Saudi Texas.
"Oil production in Texas is soaring, jumping to an average 2.139 million barrels a day in November — the best showing in more than 25 years.
"Analysts are chalking up Texas’ booming production to shale plays, especially South Texas’ Eagle Ford, where production was minuscule just five years ago, along with a revival of West Texas’ Permian Basin.
"Analysts are tossing around the words 'phenomenal,' 'amazing' and 'unprecedented' when discussing the numbers."
Read the whole thing here.