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.
USA Today on Wednesday had a front-page story on how energy indepedence is not just a pipe dream any more for the United States.
The story looks at Williamsport, Pa., a hot spot for drilling into the Marcellus shale in north-central Pennsylvania.
The drilling boom that is sweeping America is creating new opportunities for the United States, the paper said.
The U.S. is the fastest-growing oil and natural gas producer in the world.
You can read the story here.