• Rebecca Byerly
Rebecca Byerly recently ran 125 miles across the Libyan Desert, leading the first American team to complete the Libyan Challenge Master Trek. And as she tells Boyd, she did it with only one month of training!
See Video

• Pico Iyer
Novelist Pico Iyer has known the Dalai Lama for over 33 years. Iyer joins Boyd to talk about his new book The Open Road: The Global Journey of the Fourteenth Dalai Lama, based on conversations with the Tibetan spiritual leader.
Read More

• Albert Lin
In life Genghis Kahn was one of the most powerful rulers of all time. In death he is still feared, and that is one of the reasons his tomb has never been found. Dr. Albert Lin is looking for the ancient tomb using tools of the 21st century. Lin joins Boyd in the studio to talk about his high-tech search for the lost tomb of Genghis Kahn.
Learn More

• Susan Magsamen
Still wondering what to do with the kids this summer? Well Boyd and Susan Magsamen, author of The 10 Best of Everything Families: An Ultimate Guide for Travelers, have more suggestions.

• Ed Viesturs
As one of the worlds best high altitude mountaineers, Ed Viesturs is the only American to summit all fourteen mountains over 8,000 meters. Now he is going for his seventh attempt on Mount Everest. Viesturs joins Boyd by satellite phone from base camp on Mount Everest.
Learn More

• Vance Vredenburg
Frogs, salamanders and other amphibians are disappearing from the face of the Earth at an alarming rate. Scientist Vance Vredenburg has been studying the problem and thinks he has some answers. Vredenburg and Boyd discuss “The Vanishing,” an article in the April issue of National Geographic magazine that highlights Vredenburg’s work.
Read the Article

• Hiroko Shimbo
Sushi is a favorite not only of Japanese, but now Americans as well. But what is our desire for raw fish doing to the oceans? Boyd talks with Hiroko Shimbo, world-renowned chef and author of The Sushi Experience, about sustainable sushi.
Read More

• Dennis Dimick
For 120 years, National Geographic has covered the natural environment that sustains our lives. Now our planet is threatened by humanity's bond with fossil fuels. In a new special issue National Geographic magazine explores the challenge ahead. Dennis Dimick, editor of the special issue, joins Boyd in the studio to talk about the energy of tomorrow.
Read More

• Notes
Boyd finds that tackling Mount Everest takes more than climbing skill. It also takes an almost super-human lung capacity.