Ayana Elizabeth Johnson

Marine Biologist, Conservation Strategist, Founder & CEO of Ocean Collectiv

What If We Get It Right?: Visions of Climate Futures

Vandana Shiva

World-Renowned Environmental Leader

Leland Melvin

Engineer, Former NASA Astronaut & Former NFL Wide Receiver

Carrie Ann Inaba

"Dancing with the Stars" Judge, Founder of Carrie Ann Inaba Animal Project

Danny Trejo

Actor, Author, Activist & Restaurateur; Recovery & Intervention Counselor for Troubled Youth

Tamron Hall

Award-Winning Journalist; Former National News Anchor for NBC News; Host of the "Tamron Hall Show"

Watch Where They Hide

Maggie Q

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

Alan Cumming

Emmy-Winning Actor Who Stars in "The Good Wife"

Portia de Rossi

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

Laura Dern

Actress, Director, Producer & Activist

Sylvia Acevedo

Engineer, Rocket Scientist & Technology Leader; Inspirational Speaker; Corporate Director at Qualcomm; Former CEO of Girl Scouts USA

How Sylvia Acevedo Defied Barriers to Become Girl Scout CEO

Tim Gunn

Fashion Icon, Former Co-Host & Mentor of "Project Runway"

Dr. Michio Kaku

World-Renowned Futurist & Theoretical Physicist