Philip Yancey

Christian Author

Tundi Agardy

Marine Conservationist & Founder of "Sound Seas," Research and Policy Project to Help Protect the Oceans and Ocean Life

Jeff Orlowski

Award-winning Filmmaker, Photographer, Entrepreneur & Climate Change Activist

Jackson Galaxy

Host, "My Cat from Hell" & Author, "Cat Daddy: What the World's Most Incorrigible Cat Taught Me About Life, Love, and Coming Clean"

Joanna Krupa

Polish-American Model; Known for Bravo's Hit Reality Series "The Real Housewives of Miami"

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Nathan Myhrvold

Founder of Intellectual Ventures; Former Chief Strategist & Chief Technology Officer of the Microsoft Corporation; Author of “Modernist Cuisine: The Art and Science of Cooking"

Karina Smirnoff

Professional Dancer on "Dancing with the Stars" & Author of "We're Just Not That Into You: Dating Disasters from the Trenches"

Gary White

CEO & Co-Founder of WaterEquity & Water.org with Matt Damon

The Worth of Water: Our Story of Chasing Solutions to the World's Greatest Challenge

Beth Stern

Television Personality, Actress, Model and Wife of Howard Stern

Alicia Silverstone

Actress & Animal Rights Activist

Robert Ballard

Renowned Ocean Explorer & Scientist

Alice Waters

Executive Chef, Founder & Owner of Chez Panisse; Sustainable Agriculture Advocate

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Daryl Hannah

Actress, Best Known for "Kill Bill" & "Splash"; Environmental Activist

Lisa Vanderpump

Author, Restaurateur & Reality TV Star of "The Real Housewives of Beverly Hills" and "Vanderpump Rules"

William McDonough

Renowned Architectural Designer, Advisor & Co-Author of "Cradle to Cradle + The Upcycle"

Jillian Michaels

Leading Fitness Expert, Certified Nutritionist, Renowned Life Coach & Powerful Entrepreneur

Alyssa Milano

Actress, Author, Philanthropist & Founder of Touch by Alyssa Milano; Known for "Charmed" and "Who's the Boss"

Olivia Munn

Actress Known for "Newsroom" & "X-Men: Apocalypse"