Source Publisher Aaron Switzer chats with Alpinist Graham Zimmerman on this podcast episode. Zimmerman is a renowned alpinist whose work has propelled him into conservation advocacy, holding leadership roles in nonprofits such as the American Alpine Club and Protect Our Winters. He’s a world-class mountaineer who has received several awards, including the Piolet d’Or, the highest honor in alpine climbing, in 2020. His debut book, “A Fine Line: Searching for Balance Among Mountains,” focuses on pursuing alpinism with social responsibility.