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.
Here are some American energy facts, courtesy of the U.S. Department of the Interior and thed U.S. Department of Energy:
1. American natural gas production grew by an estimated 7.4 percent in 2011. That's the larges-ever year-over-year volumetric increase. It easily eclipsed the previous production record set in 1973. Last year was the No. 2 year ever for natural gas production on public lands in the last 10 years.
2. In 2011, the federal Bureau of Land Management held 32 oil and gas leases covering nearly 4.4 million acres, mostly in the West. Those leases generated $256 million in revenue for American taxpayers. That's nearly a 20 percent increase in lease revenues from 2010.
In 2012, BLM is scheduled to hold an additional 32 lease sales.
3. Since 2008, U.S. oil and natural gas production has increased, while imports of foreign oil have decreased.
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