Ronan Donovan

National Geographic Storytelling Fellow at the National Geographic Society

National Geographic's Ronan Donovan | Deloitte Digital

Tala Dowlatshahi

Award-Winning Global Human Rights, Climate Change & Public Health Policy Expert; Former Senior Advisor for Stakeholder Engagement at the United Nations

Dr. Julio Friedmann

Chief Scientist at Carbon Direct & Non-Resident Fellow at the Center on Global Energy Policy at Columbia University SIPA

Joan Michelson

Co-Host of the Electric Ladies Podcast, ESG Consultant, Business Sustainability & Leadership Expert

Brandon McMillan

Animal Trainer Known as the Host of CBS's "Lucky Dog" Series

Danni Washington

TV Host, Science Communicator, Ocean Explorer & Nature Advocate

Cristina Mittermeier

Photographer, Adventurer & Co-Founder of SeaLegacy

Cassie De Pecol

2x Guinness World Record Holder, Historical Record Breaker, Ironman Finisher, Non-Profit Founder, Brand Ambassador, App Owner & Author

Dr. Sylvia Hood Washington

Chief Environmental Research Scientist at Environmental Health Research Associates, LLC.

Dr. Jan Pol

Veterinarian; Star of Nat Geo Wild's "The Incredible Dr. Pol"

Wallace J. Nichols

Scientist, Activist & Author Who Will Change the Way You Think About Water

Katharine Hayhoe

Atmospheric Scientist, Professor of Political Science & Director of Climate Science Center at Texas Tech, Lead Scientist with The Nature Conservancy

Saving Us: A Climate Scientist's Case for Hope and Healing in a Divided World

Boyd Varty

Author of "Cathedral of the Wild," Speaker & Conservationist at Londolozi Game Reserve

Stefanie Powers

Emmy Award-Nominated Actress & Wildlife Conservationist

Michael Chang

Retired Tennis Star & International Tennis Hall of Famer; Won the French Open at age 17; Author of "Holding Serve"

Dorthe Scherling Nielsen

Independent Board Director & Executive Advisor on Sustainability; Former Nike and Vestas Executive

Mark Bittman

Former NYT Writer; Author of "How to Cook Everything" Series; Host of "Food with Mark Bittman"

Catherine Coleman Flowers

Climate Justice Activist; Founding Director of the Center for Rural Enterprise and Environmental Justice

Catherine Coleman Flowers - Climate Business Innovation Summit

Denis Hayes

Organizer of the First Earth Day; CEO of The Bullitt Foundation

Jack Hanna

Naturalist, Adventurer & Director Emeritus of the Columbus Zoo