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.
Portage County's Randolph Township will host a public meeting on Jan. 25 to look at hydraulic fracturing or fracking in natural gas drilling.
The meeting will begin at 7 p.m. in the township community center, 1639 State Route 44.
The program includes a presentation by Chesapeake Energy Corp, the most-active company in drilling to Ohio's Utica shale, plus anti-fracking speakers.
A number oflocal, county and state elected officials are also expected to attend the program.