For generations, Pennsylvanians have been at the forefront of conservation movements that have shaped the United States. Pennsylvanians like Gifford Pinchot, Joseph Rothrock, J Horace McFarland and Rachel Carson have had immeasurable impacts on our natural world. They’ve helped protect our forests, create state parks, beautify our cities and warn against the devastating affects of pesticides. Others like Ralph Brock and Mira Lloyd Dock have often been left out of the history books, due ...