• Roz Savage
National Geographic Adventurer of the Year Roz Savage was the first woman to row solo across the Atlantic and Pacific Oceans. She takes to the waves to bring awareness to the environmental impact of humans on the seas. Boyd talks to Savage about her upcoming row across the Indian Ocean.
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• Mark Jenkins
The mammoth caves of Vietnam reveal a jungle-like landscape where there is room enough for an entire New York City block of 40-story buildings. Author Mark Jenkins writes about his exploration of these caverns in the January National Geographic magazine article “Vietnam Cave.”
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• Jamie Mitchell
Paddleboarder and National Geographic Adventurer of the Year Jamie Mitchell recently won his ninth race across Hawaii’s Molokai Channel. Mitchell can now rightfully claim the title of the best paddler boarder on Earth. Mitchell joins Boyd to talk about the growing sport.
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• Keith Bellows
Keith Bellows, editor of National Geographic Traveler magazine, gives Boyd 42 reasons to celebrate winter, from winter surfing in Rhode Island to harvesting ice in Maine.
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• David Braun
Join National Geographic's daily online news editor David Braun as he shares some of the week’s hottest stories. Braun and Boyd discuss the mating habits of birds and bears.
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• Bruckner Chase
Bruckner Chase is a marathon swimmer who is passionate about raising awareness of our impact on the oceans. Chase recently completed a 28-mile, 13-hour swim through the Monterey Bay National Marine Sanctuary, where he was continuously stung by thousands of jellyfish.
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• Ed Stafford
One day while surfing the Web, Ed Stafford discovered that no one had ever walked the length of the Amazon River from source to sea. This inspired him to trek more than 4,000 miles through the Amazon—a journey that took more than two-and-a-half years to complete. As Stafford tells Boyd, he faced hostile locals, venomous snakes, and huge distances without food resupplies. This epic adventure has earned Stafford the title of National Geographic Adventurer of the Year.
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• Jennie Erin Smith
In the book Stolen World: A Tale of Reptiles, Smugglers, and Skulduggery, author Jennie Erin Smith explores the strange world of reptile dealers. Smith and Boyd discuss why people risk going to jail for selling snakes and lizards.
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• Peter Gwin
The ancient city of Timbuktu has lured travelers for centuries. Peter Gwin recently traveled there to report on the great books and mysterious letters the city still harbors. His article “The Telltale Scribes of Timbuktu” appears in the January issue of National Geographic magazine.
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• Story-Swimming with Dolphins
In his regular Wild Chronicles segment, Boyd shares a story about swimming with Amazon pink river dolphins and other not-so-friendly creatures.