new video loaded: The Decline of America’s Largest Environmental Organization
David A. Fahrenthold, an investigative reporter, describes the struggles of the Sierra Club, one of the largest environmental groups in the U.S. The group has lost about 60 percent of its supporters since 2020.
By David A. Fahrenthold, Leila Medina, Karen Hanley, Laura Bult, Joey Sendaydiego, Christina Thornell, Zach Wood and Jon Miller
November 7, 2025
