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.
In 2005, many energy experts thought peak oil was upon us.
Shale energy has changed that and now the peak oil theory is dead, writes the Econbrowser blog.
"The rush to judgment seems to be based on the remarkable recent success from using horizontal fracturing to extract oil from tighter rock formations," the Econbrowser blog post says in part.
Read the whole thing, including numerous charts and graphs, here.