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.
Stopping fracking is the latest cause of the silly people, writes reporter John Stossel at the web site Reason.
Stossel: "The real story on fracking, say scientists, is that the risks are small and the rewards immense. Fracking lowered the price of natural gas so much that Americans heat our homes for less, and manufacturing that once left America has returned. For those concerned about global warming, burning gas instead of oil or coal reduces CO2 emissions.
"... Time and again, as humans make a good-faith effort to find new, cleaner ways to produce the energy a growing population needs, environmentalists find a reason -- often very small or non-existent -- that makes the new method unacceptable.
"They say coal is dirty and normal oil production might overheat the planet. Hydroelectric dams kill fish. Nuclear plants could suffer meltdowns. Windmills kill birds.
"Some won't be happy unless we go back to what we did before industrialization: burn lots of trees and die young."
Read the whole thing here.