During President Obama’s visits to upstate New York and northeastern Pennsylvania to discuss his education agenda, a separate issue looms large in the background, reports Joe Eaton for National Geographic. It is hydraulic fracturing, commonly called “fracking,” and it is a practice that has transformed Pennsylvania’s economy and divided New York, where a moratorium is in place, notes National Geographic.

Protesters on both sides of the issue are expected to greet the President, Eaton writes. And while his trip highlights many unresolved issues related to America’s new wealth of natural gas and oil, a growing number of communities are taking matters into their own hands, according to the National Geographic report.

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