'Free Solo' climber Alex Honnold often sees melted glaciers on his climbs. It's changed the course of his career.

'Free Solo' climber Alex Honnold often sees melted glaciers on his climbs. It's changed the course of his career.

Renowned climbers Alex Honnold and Tommy Caldwell tackled Devils Thumb in Alaska in 2023. Honnold noted environmental changes impacted the climb. He founded the Honnold Foundation to address climate change and improve communities through renewable energy projects worldwide.

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