Over the course of millions of years, heat and pressure can transform the organic remains of animals and plants into crude oil. That's why they're called a fossil fuels — the long-dead creatures that ...

Colleen O’Neil, of the Mountain Watershed Association, fixes a crooked sign posted near a landfill's discharge pipe that flows into Sewickley Creek in Yukon, Pa. Credit: Scott Goldsmith/Inside Climate ...

FACTS ABOUT THE CANDIDATES CLAIMS. FRACKING IS A MAJOR INDUSTRY IN PENNSYLVANIA, CREATING THOUSANDS OF JOBS, BUT ALSO CAUSING CONCERNS ABOUT PUBLIC HEALTH. VICE PRESIDENT HARRIS AND FORMER PRESIDENT ...