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.
AOL Energy looks at Ernst & Young's quarterly energy review and excerpted this about natural gas:
"Last year, US natural gas prices averaged below $3/MMBtu for the first time since the late 1990s amid a glut of production, leaving many if not most natural gas producers in a bind. Small gas producers are expected to continue struggling this year with questions remaining about their ability to survive. Low natural gas prices, however, will continue driving a renaissance in the US petrochemical and manufacturing sectors as they lower feedstock costs. US natural gas exports will remain a controversial issue this year as supporters and adversaries escalate political tensions around how much exports could impact domestic natural gas prices."
The full story is here.