For years, regional agreements have been used to improve watersheds in places like the Chesapeake Bay and the Great Lakes. Some advocates argue the Ohio River needs one too.
Just how bad is it? A former state environmental regulator says deep cuts to budgets and staffing mean the Pennsylvania DEP is now "dangerously close" to not being able to fulfill its mission.
Pittsburgh is investing big in green infrastructure in 2017 as part of a major plan to overhaul its sewer and stormwater system. But how well these projects will work is still unknown.
Fracking has been banned in New York since 2015. But a proposal to store natural gas in underground caverns in the state's scenic Finger Lakes region is bringing the issue back to the forefront.
The EPA's landmark study of fracking's impact on drinking water has been embroiled in a seesaw battle of semantics. Here's what the agency is saying in its final report.
Call it a silver lining. But states along the Ohio River have much better safeguards for drinking water supplies today as a result of some past disasters.
Back in 2014, Ten Mile Creek was suspected to have dangerously high levels of radium. But recent tests by the Pennsylvania DEP now show that levels are within federal safety standards.
Interstate cooperation has been crucial to restoring waters in the Great Lakes and Chesapeake Bay. But so far, marshaling a regional effort to improve the Ohio River has proven difficult.