JJ Kelley

Alex Honnold leads an expedition to Greenland to climb a huge 4,000 foot sea cliff and investigate the impacts climate change on the region.

Follows renowned cave explorer Bill Stone as he and his team push the boundaries of what has ever been done before as they attempt one of the greatest achievements of modern exploration — to set a new world record by venturing into the bottom of what is thought to be the deepest cave in the world.

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At the height of the COVID-19 crisis, National Geographic Explorer, Chris Golden, and ABC News foreign correspondent, James Longman, embark on an epic worldwide journey to figure out how to stop the next pandemic, before it’s too late.