• Beverly and Derek Joubert
Big cat populations are declining rapidly. At the current rate, lions, tigers, and leopards might soon be found only in museums. In an effort to halt population declines by the year 2015 and restore numbers to sustainable levels, National Geographic launched the “Big Cats Initiative.” The initiative is spearheaded by National Geographic Explorers-in-Residence, Beverly and Derek Joubert. The Jouberts join Boyd in the studio to update him on the program’s progress.
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• David Silverman
National Geographic Weekend rides in style on a 3,000-year-old chariot. King Tutankhamun’s chariot to be exact. Tut rode full speed over desert dunes on his racing chariot that is now on display in New York City as part of the exhibit: “Tutankhamun and the Golden Age of the Pharaohs.” Boyd talks with David Silverman, the exhibit’s curator.
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• Dorrik Stow
How do you make an ocean disappear? Oceanographer Dorrik Stow has the answer in his new book Vanished Ocean: How Tethys Reshaped the World. Boyd talks with Stow about the Tethys Ocean that formed 250 million years ago.
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• David Braun
Join National Geographic's daily online news editor David Braun as he shares some of this week’s hottest stories. Braun sits down with Boyd to talk about wild cats and dogs and the breeding of giant salamanders.
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• Sean Burch
Sean Burch is one of the world's top extreme adventurers and a multiple Guinness World Record holder. He has run up Mount Fuji and Mount Kilimanjaro and summited Mount Everest on a solo climb. Now, Burch is planning to run across Nepal in 60 days. Burch talks to Boyd on the eve of his departure for the Himalayas.
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• Tom Mueller
An Egyptian desert, once an ocean, holds secrets to one of evolution’s most remarkable transformations—whales with legs. Tom Mueller writes about the origins of marine mammals in his article “Valley of the Whales” in the August 2010 issue of National Geographic magazine.
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• Barton Seaver
National Geographic Fellow Barton Seaver joins Boyd in the studio for the regular segment “Cooking with Barton.” This week Seaver and Boyd talk about why spelling is important if you are planning to enjoy oysters.
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• William Eamon
Author William Eamon joins Boyd to talk about his new National Geographic book The Professor of Secrets: Mystery, Medicine and Alchemy in Renaissance Italy. The book tells the story of Leonardo Fioravanti, a brilliant, remarkably forward-thinking, and utterly unconventional doctor.
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• Story-Customs, Blowguns and Poison Darts
In his regular Wild Chronicles segment, Boyd shares a story about getting through customs with an 11-foot blowgun and poison darts.