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.
The documentary film Carbon Nation will be shown tonight in Portage County.
It will be screened from 7 to 9 p.m. at the Maplewood Career Center, 7075 State Route 44, Ravenna.
The showing is being sponsored by the Concerned Citizesn Ohio and the League of Women Voters of Northern Portage County.
Screening rights anhd DVD are provided by the Sierra Club.
Admission is free.
For more information, call 330-569-7863 or go to www.concernedcitizensohio.org.