August 12, 2019
The John Muir trail near the Nevada Falls, left, bears the imprints of thousands of hikers’ boots on Sept. 6, 1972. (William Straeter/AP)
Editor’s note: Just after broadcast, the Trump administration announced a broad set of changes to how the Endangered Species Act is enforced. Wildlife advocates warn that the changes will make it easier for the U.S. Fish and Wildlife Service to ignore imperiled species and their habitat.
With Meghna Chakrabarti
The battling philosophies around conservation that gave us the public lands we have today — and what we can learn from the debate.
John Clayton, author, journalist and essayist. His new book is “Natural Rivals: John Muir, Gifford Pinchot, and the Creation of America’s Public Lands.” (@JohnClaytonMT)