• Ed Viesturs
Ed Viesturs, one of the world’s premier high-altitude mountaineers, is the first and only American to climb all 14 of the world’s mountains measuring more than 8,000 meters above sea level. Adding to the accomplishment, Viesturs summitted them all without supplemental oxygen. Viesturs joins Boyd to talk about his relationship with K2—one of his earliest peaks—and the topic of his newest book, K2: Life and Death on the World’s Most Dangerous Mountain.
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• Susan Norton
Susan Norton, director of the National Geographic Museum, joins Boyd to discuss the museum’s upcoming exhibit, “Terra Cotta Warriors: Guardians of China’s First Emperor.” Running from November 19, 2009 through March 31, 2010, the exhibit displays 15 terra cotta figures from the tomb of Qin Shihuangdi, representing the largest number of terra cotta figures to ever come to the United States.
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• Mark Johnson
Music producer Mark Johnson, co-founder of Playing for Change, has recorded musicians all over the world playing the same song and combined the performances together to create videos that have struck a chord with millions of people. Now the Playing for Change musicians are touring the United States and Johnson joins Boyd to tell him how he is hoping to find peace through music.
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• Boyd talks about the National Geographic magazine “Your Shot” photo of a chimpanzee burial that is going viral on the Internet.

• Roz Savage
Roz Savage decided she needed to get away from it all, so she set out to row across the Atlantic Ocean. Savage tells the story of her 3,000-mile trial by sea in a new book titled Rowing the Atlantic: Lessons Learned on the Open Ocean.
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• David Burnett
Thirty years ago, National Geographic photographer David Burnett found himself right in the middle of the Iranian Revolution. Today, he has collected photos from that tumultuous time into a new book called 44 Days: Iran and the Remaking of the World. Burnett talks with Boyd about his experiences and current day Iran.
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• James Lazell
James Lazell spent a month on a resort tropical island in the Caribbean, but he wasn’t relaxing. During the month, Lazell and a team of scientists were combing Guana Island, studying the diverse flora and fauna that can be found there. Lazell tells Boyd about the excursion and what he discovered.
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• David Haft
David Haft is vice president of Sustainability and Productivity at Frito-Lay. Haft tells Boyd how, and more importantly why, the snack food company is going green.
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• Boyd contemplates the perplexing question: do animals think?