Thousands of gallons of drilling mud from construction of the Mariner East pipeline contaminated a state park lake. Protestors are calling for its shutdown.
In the lead-up to the general election, four western Pennsylvania voters talk about what could sway their votes when it comes to energy and the environment.
A journalist and an Indigenous rights activist weigh in recent court rulings against the Dakota Access and Keystone XL pipelines and the scrapping of the Atlantic Coast pipeline.