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.
Royal Dutch Shell PLC is lookinjg into building a $10 billion natural gas-to-diesel plant, perhaps in Louisiana, according to the Wall Street Journal.
The plant would be similar to the Pearl plant in Qatar. That plant converts enough natural gas into diesel to fuel 160,000 cars per day.
It is scheduled for full production later this year.
Shell would not confirm that the plant would be built in Louisiana, but said it is looking at a number of sites on the Gulf Coast.