• Richard Conniff
Field journalist Richard Conniff, author of Swimming with Piranhas at Feeding Time: My Life Doing Dumb Stuff with Animals, joins Boyd to talk about some of his not so bright ideas, including sitting down with wild dogs and repeatedly putting his hand in a fire ant colony.
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• Tyler Fish
Tyler Fish and John Huston just became the first Americans to ski to the North Pole without support and all on their own power. Fish joins Boyd by phone to talk about the historic trek!
Visit Their Website

• John Rasmus
National Geographic Adventure magazine is 10 years old. John Rasmus, Editor in Chief, joins Boyd in the studio to celebrate a decade of helping people dream it, plan it and do it!
NG Adventure Website

• Abhay Ashtekar
Abhay Ashtekar is the director of the Institute for Gravitational Physics and Geometry at Pennsylvania State University. Ashtekar joins Boyd to talk about the big bang, quantum physics and what there was before the universe began.
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• Kim McKay
Kim McKay, author of True Green Home: 100 Inspirational Ideas for Creating a Green Environment at Home, joins Boyd to share some easy, effective tricks for saving money while making your house greener.
Buy the Book

• Mark Jenkins
Mark Jenkins has created an Internet sensation with his video of the song "Stand By Me." The video of musicians around the world singing the same song has been viewed over 10 million times. Jenkins joins Boyd to talk about his inspiration for the "Playing for Change" video that is soon to be a full-length documentary film.
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• Jon Bowermaster
In his new book, Wildebeest in a Rainstorm: Profiles of Our Most Intriguing Adventurers, Conservationists, Shagbags and Wanderers, Jon Bowermaster writes about some of the worlds most interesting and accomplished adventurers and environmentalists—many of whom have been on National Geographic Weekend in the past. Bowermaster joins Boyd to share stories of traveling with some of these eccentric characters.
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• Cagan Sekercioglu
Dr. Cagan Sekercioglu is a senior scientist at Stanford University and a National Geographic grantee. Sekercioglu joins Boyd to talk his work in eastern Turkey protecting vultures and migratory birds by building an artificial island where they can nest safely.
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• James Meredith
James Meredith is the project manager for the WorldFirst Formula 3 project, a UK team building a racecar from sustainable and renewable material. Meredith tells Boyd the car has a steering wheel made from carrots and is fueled with chocolate!
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• Notes
Boyd says a recent dip in the Amazon River had him worried. But it was the toothpick fish, not piranhas that were on his mind!