Olivia Ward

Winner of "Biggest Loser" Season 11

Stuart Firestein

Scientist; Advocate for the Public Understanding of Science

Sasha Andreev

Actor, Emcee & Host of HGTV's "Curb Appeal"

Streeter Seidell

Comedian, Writer for SNL & Contributor to CollegeHumor.com

Natalie Warne

Activist, Advocacy Educator, Engagement Strategist & TED Speaker

Karen Pittman

Co-Founder & Former Executive Director of the Forum for Youth Investment

John Sano

Former CIA Agent & Former Deputy Director of National Clandestine Service

Joe Ruffini

Anti-Terrorism, Information Security & Risk Minimization Expert

Roselinde Torres

Senior Partner and Managing Director at the consulting firm, BCG.

Charles Limb

Associate Professor of Otolaryngology-Head and Neck Surgery

Lamman Rucker

Actor, Education Activist, Green Living Advocate & Entrepreneur

Eleanor Longden

Mental Health Advocate & Speaker; Postdoctoral Service User Research Manager at Psychosis Research Unit

Compassion for Voices: a tale of courage and hope

Summer Baltzer

Art Director; Host of HGTV's "Design on a Dime"

Ron Marks

Performance and Sales Management Speaker, Trainer and Author

Sandra Fluke

Lawyer, Social Justice Advocate, Women's Health Expert

Monica Pearson

First Female & African-American News Anchor in Atlanta

Andreas Schleicher

Deputy Director for Education and Skills and Special Advisor on Education Policy to the OECD's Secretary-General

Dr. Max Rogers

Former Fighter Pilot, Healthcare Consultant

Edward Lewis

Co-Founder of Essence Magazine & One of the Most Successful Publishers in the Country

Joshua Prince-Ramus

Architect & Principal of REX Design Firm