Jarod Miller

Naturalist, Zoologist & Television Host

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Jack Hanna

Naturalist, Adventurer & Director Emeritus of the Columbus Zoo

Peter B. de Menocal

President & Director of Woods Hole Oceanographic Institution; Professor, Department of Earth and Environmental Sciences Columbia University

Peter de Menocal on Ocean Solutions for a Warming Planet

Brian Hare

Co-founder of Dognition & Associate Professor of Evolutionary Anthropology at Duke University, Author of "The Genius of Dogs"

Doug Fine

Globe-Trotting Journalist, Award-Winning Climate Correspondent, Goat-Herder & Author

Karen Litzinger

Business etiquette trainer/keynote and career coach with a side passion as a pet loss counselor and author

Sarah Brosnan

Primatologist; Professor of Psychology, Philosophy & Neuroscience at Georgia State University

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Mark Bittman

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

Laura Dern

Actress, Director, Producer & Activist

Ellen DeGeneres

Award-Winning Comedian, TV Host, Actress & LGBTQ Activist

David Brody

Interviewing America's Newsmakers

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Keith Murnighan

Distinguished Professor, Kellogg School of Management; Author, Do Nothing, How to Stop Overmanaging and Become a Great Leader.

Amanda Beard

Olympic Gold Medalist, Co-Founder of Beard Swim Co. & Author of New York Times Bestseller "In the Water They Can't See You Cry"