'Free Solo' climber Alex Honnold witnessed the effects of climate change throughout his career. It inspired him to start the Honnold Foundation in 2012, a non-profit that builds renewable energy resources around the world. He's seen 'dramatic' landscape changes on his climbsHonnold and Caldwell previously planned an ice climb in Patagonia, Argentina. Related storiesHis foundation focuses on communitiesIn 2023, the Honnold Foundation helped launch the first community-led microgrid project in Puerto Rico. "The Devil's Climb" premieres October 17 at 9pm EST on National Geographic and streams the next day on Disney+ and Hulu.

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Persons: Alex Honnold, He's, Tommy Caldwell, Caldwell, Renan Ozturk Honnold, Honnold, Matt Pycroft, Hurricane Maria, Adam Skolnick, Skolnick Organizations: Honnold Foundation, Service, Geographic, Hurricane, Disney Locations: Patagonia, Alaska, Argentina, Puerto Rico, Detroit, Memphis, Hulu