Jennifer Pharr Davis

Long-Distance Hiker & Author; Overall Record Holder on the Appalachian Trail & The First Woman to Set That Mark

Outdoor School: Hiking and Camping: The Definitive Interactive Nature Guide

Dr. Tierney Thys

Marine Biologist, Educator & Filmmaker

Chad Pregracke

Founder of Living Lands & Waters, CNN's Hero of the Year for 2013, Environmental Speaker & Bestselling Author

Nalini Nadkarni

Ecologist, Director of STEM Ambassador Program & Leading Expert in Canopy Research

Barton Seaver

Celebrity Chef, Author & Sustainable Food Advocate; National Geographic Fellow; Ocean Conservationist

Annie Griffiths

Award-Winning Photographer for National Geographic

Christopher Elliott

Reader Advocate and Columnist for National Geographic Traveler

Aziz Abu Sarah

National Geographic Explorer, Cultural Educator & Peace Activist

Dennis Dimick

Former Executive Environment Editor at National Geographic Magazine

Chad Jenkins

Associate Director of the Robotics Institute at the University of Michigan

Joel Sartore

National Geographic Photographer & Author

Courteney Monroe

CEO of National Geographic Global Networks

Kakenya Ntaiya

Kenyan Educator, Feminist & Social Activist

Michael Nichols

Journalist, Photographer & Founder of the LOOK3 Festival of the Photograph

Mireya Mayor

Primatologist, Wildlife Conservation Advocate, Author & TV Host

Mattias Klum

Natural History Photographer, Keynote Speaker & Sustainability Advocate

Kristofer Helgen

Zoologist & Curator of Mammals at the Smithsonian; Discovered the Carnivorous Mammal, the Olinguito

Çağan Hakkı Şekercioğlu

Ornithologist/ Conservation Ecologist

Michael Lombardi

Diving Scientist, Technologist & Environmentalist

Donald Johanson

Paleoanthropologist