• Diane Van Deren
Twelve years ago Diane Van Deren, a former pro tennis player, had a kiwi-size chunk of her brain removed to treat epileptic seizures. The lobectomy was successful, but since then she has noticed a strange side effect: She can run without pause for hours. In 2009, Van Deren was named a National Geographic Adventurer of the Year honoree. Van Deren joins Boyd to talk about running, and finishing, the Yukon Arctic Ultra, a 430-miler across frozen tundra in the dead of winter. It’s said to be the toughest race in the world.
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• Andrew Evans
National Geographic Traveler magazine Contributing Editor Andrew Evans is on his way to Antarctica—by bus. Evans started his adventure on January 1st, at a bus stop just outside the front doors of National Geographic in Washington, D.C. and he is blogging and twittering about the trip along the way. Evans joins Boyd via cell phone while riding a bus in Honduras to update us on the trip so far.
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• Don Belt
Jerusalem is holy for three major religions. "The Holy Land," a new National Geographic magazine special issue, takes a look at the tumultuous history of this coveted city. National Geographic magazine senior editor Don Belt joins Boyd to dissect the ongoing conflict.
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• David Braun
National Geographic News editor David Braun joins Boyd to talk about some recent NG News stories.
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• John Grunsfeld
National Geographic Adventurer of the Year honoree John Grunsfeld is known around NASA as “The Hubble repairman.” Last May Grunsfeld restored sight to the half-blind Hubble telescope while floating 350 miles above the surface of the Earth. Grunsfeld explains what going for a walk in space feels like and tells Boyd just what astronauts can and can’t see from space.
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• Bryan Christy
“The Kingpin,” an article in the January 2010 National Geographic magazine by Bryan Christy, is an exposé of the world's most notorious wildlife dealer. Christy explains to Boyd how Wong Keng Liang continues to sell rare and endangered animals all over the world with impunity.
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• Jim Richardson
In the January 2010 National Geographic magazine article “Edge of the World,” photographer Jim Richardson explores the stern yet sublime islands that are Scotland’s Hebrides. Richardson joins Boyd to reveal some of the photography techniques he used to capture beautiful pictures of these wild islands.
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• Alton Byers
Where does all the water go when glaciers melt? In Nepal, tens of new lakes are appearing where none stood before. National Geographic grantee Alton Byers says many of these lakes are poised to overflow, flood villages and possibly kill people. But, as Byers tells Boyd, there are ways to prevent such disasters.
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• Boyd shares a story about being a human pincushion.