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.
The editors of Bloomberg News on Thursday said shale gas offers America tremendous opportunity, but that environmental problems must be solved first.
"Anything as big and as promising as shale gas is bound to be complicated," the editors wrote.
The shale gas, including Ohio's Utica shale, offers wonderful opportunities.
But there is a problem: "The public still has well-founded concerns about the safety of fracking," they wrote.
Some critics may be overboard, but legitimate issues remain to be addressed: earthquakes with injection wells, water pollution, greenhouse gas emissions and air quality, Bloomberg wrote in a well-thought-out analysis.
It urged the government agencies and industry to work together to resolve those concerns, even if it takes time and money.
The Obama Administration is proposing to spend $45 million in the 2013 federal budget on fracking research and development.
"To ensure that fracking realizes its promise, both the cost and the delay are worthwhile," the editors wrote.
You can read the whole story here.