Darin Olien

Co-Host of Netflix "Down To Earth" with Zac Efron, Best-Selling; Original Formulator of "Shakeology;" Healthy Living & Superfoods Expert

Joe Cross

Australian Entrepreneur, Author, Filmmaker & Wellness Advocate; Best Known for "Fat, Sick & Nearly Dead"

What are your biggest challenges ?

Lauren Shweder Biel

Executive Director, DC Greens

John Foraker

Co-Founder & CEO of Once Upon A Farm

Jordan DeCicco

Co-Founder of Kitu Life

Matthew Kenney

Celebrity Chef, Educator & Author, Specializing in a Plant-Based Diet

P. Allen Smith

Garden and Design Expert, Conservationist, TV Host & Author

Nathaniel Ru

Co-Founder and Co-CEO of Sweetgreen; "Fast Company's Most Creative in Business," "Inc.'s 30 Under 30"

Matthew Salzberg

Co-Founder & CEO Blue Apron

Nicole Kidman

Actress, Singer & Film Producer; Known for "The Hours" & "Moulin Rouge!"

Will Allen

Pioneer in the Urban Farming Movement, Author & Founder of Growing Power

Kevin Gillespie

Celebrity Chef, Former "Top Chef" Fan Favorite

Gagan Biyani

CEO of Healthy Food Delivery Startup 'Sprig'

Dale Levitski

Celebrity Chef and Former Top Chef Contestant

Tobey Maguire

Tobey Maguire is an actor known for his starring roles in the "Spider-Man" trilogy, "Brothers" and "The Great Gatsby."

Mena Suvari

Actress Known for "American Beauty" & Author of "The Great Peace: A Memoir"

Daryl Hannah

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

Courteney Cox

Actress, Producer & Director

Amy Smart

Actress, Environmentalist & Co-Founder of Smart House Collections

Katrina Markoff

Founder & CEO, Vosges Haut-Chocolat