Erin Brockovich

Consumer Advocate, Author, TV Host & Environmental Activist

Jeff Orlowski-Yang

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

Sophia Bush

Actress, Humanitarian & Author

Matt Damon

Actor, Screenwriter & Producer; Co-Founder of Water.org; Expert Advocate on Global Water & Sanitation Crisis

Adrian Grenier

Actor Known for HBO's "Entourage"; Environmental Activist; UN Ambassador

Laura Dern

Actress, Director, Producer & Activist

Tamron Hall

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

Watch Where They Hide

Maria Menounos

CEO & Co-founder of AfterBuzz TV; Former E! News Co-Anchor; Best-selling Author, Journalist & Type-1 Diabetic

Willie Nelson

Country Music Singer-Songwriter Known for "On The Road Again" & "Always On My Mind"

Bernadette Beck

Founder & CEO of Kindle Coffee & 1 for 1 Foundation; Actress & Journalist Known for "Riverdale"

Brad Pitt

Actor, Producer, Philanthropist & Environmental Activist

Alfonso Ribeiro

Host of America’s Funniest Home Videos, Actor, TV Director, Award-Winning Dancer & Broadway Star

Lisa Vanderpump

Entrepreneur, TV Personality, Author & Philanthropist

Lisa Vanderpump Tells Us About Her First Times

Lily Tomlin

Actress & Comedian; Star of Netflix's "Grace and Frankie"

Olivia Munn

Television & Film Actress; Known for "Newsroom" & "X-Men: Apocalypse"

Olivia Munn on Jon Stewart | 2022 Mark Twain Prize

Gabriela Cowperthwaite

Director, Writer & Producer; Best Known for the Documentary "Blackfish"

Kristen Bell

Actress & Film Producer; Known for "Veronica Mars" & "Frozen"

Liz Bonnin

Award-Winning Science Expert & Broadcaster; Known for "Blue Planet Live" and "Drowning in Plastic"

Sonja Morgan

As the break out star and the woman everyone would most want as a friend on Bravo’s “Real Housewives of NYC,” Sonja Tremont-Morgan represents “housewife” in every sense of the word.

Rachelle Lefevre

Rachelle Lefevre is a Canadian actress. She played the vampire Victoria Sutherland in the first two films of the Twilight saga