Christiana Figueres

Expert on Global Climate Change; Former Executive Secretary of the UN Framework Convention on Climate Change

Maggie Q

TV & Film Actress, Known for Lead Role in CW's "Nikita"

Lisa Edelstein

Actress, Director, Writer & Producer

Kristin Davis

Actress Best Known for her Role as Charlotte on "Sex & the City"

Mark Ruffalo

Actor, Director, Producer, Screenwriter & Environmental Activist

Denise Richards

Actress, Former Fashion Model & Reality Star on Bravo's "The Real Housewives of Beverly Hills"

Yao Ming

President of Chinese Basketball Association, NBA Hall-of-Famer & Founder of the Yao Family Wines

Yao Ming's 2016 Hall of Fame Induction Speech

Sarah McLachlan

Singer-Songwriter & Activist

Pink

Singer-Songwriter, Actress, Philanthropist & Environmental Activist

Kesha

Pop Singer Known For "Tik Tok," "Your Love Is My Drug" & "Praying"

Leona Lewis

Singer, Songwriter & Animal Welfare Activist; Best Known for "Bleeding Love"

Dennis Dimick

Former Executive Environment Editor at National Geographic Magazine

Pamela Anderson

Actress, Model, Producer & Animal Rights Advocate

Portia de Rossi

Actress, Known for"Ally McBeal" & "Arrested Development."

Howard G. Buffett

Businessman, Philanthropist & Elder Son of Warren Buffet

Timothy Dalton

Actor Best Known for Portraying James Bond in The Living Daylights and Licence to Kill

Hayden Panettiere

Actress Known for "Nashville" & "Heroes" & Animal Rights Activist

Mena Suvari

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

Jason Biggs

Actor Known For His Roles in the "American Pie" Series and on "Orange Is The New Black" Among Others

Chrissie Hynde

Singer, Songwriter, and Musician; Best Known as the Lead Singer of the Rock Band "The Pretenders"