Artist adventurer Dean Potter turns a harrowing slackline walk into a thing of beauty—with a little help from the moon. Upcoming Events at National Geographic Live! events.nationalgeographic.com/events/ The National Geographic Live! series brings thought-provoking presentations by today's leading explorers, scientists, photographers, and performing artists right to your YouTube feed. Each presentation is filmed in front of a live audience at National Geographic headquarters in Washington, D.C. New clips air every Monday.

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