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.
Foreign Affairs takes a look at how unconventional energy, including shale gas and oil, will change world politics and says Russia in particular is fighting back, including funding anti-fracking groups.
Aviezer Tucker writes: "The energy map of the world is being redrawn -- and the global geopolitical order is adrift in consequence. We are moving away from a world dominated by a few energy mega-suppliers, such as Russia, Saudi Arabia, and Venezuela, and toward one in which most countries have some domestic resources to meet their energy needs and can import the balance from suppliers in their own neighborhood.
"This new world will feature considerably lower energy prices, and in turn, geopolitics will hinge less on oil and gas. Within the next five to ten years, regimes that are dependent on energy exports will see their power diminished."
" ... Both the collapse of the Soviet Union and the downfall of former Russian President Boris Yeltsin in the late 1990s coincided with periods of low energy prices; Vladimir Putin, the current president, knows this history all too well."
The essay can be read here.