Patricia Arquette

Academy Award-Winning Actress, Activist, Humanitarian & Author

Alexandra Cousteau

Environmental Activist, Storyteller & Ocean Advocate

Hill Harper

Best-Selling Author, Tech Entrepreneur, Investor, Philanthropist & Actor; Best Known For "CSI: NY" & "The Good Doctor"

Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Winona LaDuke

Executive Director of Honor the Earth

Rose McGowan

Writer, Actor, Director, Entrepreneur and Whistle-Blower

Alicia Silverstone

Actress & Animal Rights Activist

Shiza Shahid

Entrepreneur, Technologist, Investor, Impact Leader & Co-Founder of the Malala Fund and Our Place

Jurnee Smollett

Actress & Singer

Sherry Lansing

Former CEO of Paramount Pictures & Founder of The Sherry Lansing Foundation

Elaine Hendrix

Actress & Animal Activist; Known for her Role in the Remake of "The Parent Trap"

Bethany Joy Lenz

Actress, Singer-Songwriter & Filmmaker; Known For "One Tree Hill"

Emmy Rossum

Actress Known for Showtime's "Shameless" & Singer-Songwriter

Daryl Hannah

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

Nikki Reed

Actress, Singer-Songwriter & Model; Founder & CEO of Eco-Sustainable Fashion Brand Bayou With Love; Autism & Environmental Advocate

Abigail Breslin

Award-Winning Actress Known for "Little Miss Sunshine" & "Scream Queens"

Doc Hendley

Global Humanitarian, Clean Water Crusader, Top 10 CNN Hero, Sustainability Advocate

Sylvia Earle

Explorer-in-Residence at National Geographic & Oceanographer; Former Chief Scientist of the NOAA

Ed Begley Jr.

Environmental Activist & Emmy Award-Nominated Actor

Amali Tower

Climate Displacement, Migration & Refugee Expert; Founder of Climate Refugees

Q&A: Amali Tower on Climate Migration and 'Evolution Earth'

Logan Browning

Actress & Singer-Songwriter; Best Known for Her Roles in "Bratz: The Movie" & Netflix's "Dear White People"

Lucy Hale

Actress & Singer; Best Known for "Pretty Little Liars"

Rebecca MacKinnon

Founding Director of Ranking Digital Rights

Jae Rhim Lee

Artist and TED Fellow Jae Rhim Lee Re-Imagines the Relationships Between the Body and the World

Marlee Matlin

Academy Award Winning Actress; Healthcare Advocate & Disability Rights Activist Fighting for Better Access for the Deaf

Maysoon Zayid

Palestinian-American Actress, Writer, Comedian, Disability & Anti-Cyber Bullying Advocate

Loretta Swit

Animal Activist & Emmy Award-winning Actress; Best Known for "M*A*S*H"

Kathy Najimy

Award-Winning Actress & Activist

Amy Goodman

Host & Executive Producer, Democracy Now!

Eleanor Clift

Author; Washington Correspondent & The Daily Beast Columnist; Former "The McLaughlin Group" Panelist