This is an as-told-to essay based on a conversation with Alex Honnold, professional rock climber and founder of the Honnold Foundation. Honnold's rope-free ascent of the 3,000-foot rock wall El Capitan in Yosemite National Park was featured in the Oscar-winning 2018 documentary "Free Solo."Honnold is an executive producer and host of the podcast "Planet Visionaries," which spotlights pioneering conservationists addressing the impacts of climate change. The podcast, produced in partnership with the Rolex Per ...