Story Musgrave, M.D.

Retired NASA Astronaut; Physician & Professor at Art Center College of Design

Yael Cohen Braun

Co-Founder & Board Chair of F*ck Cancer

Haydn Shaw

Expert in Generational and Cross-functional Roles, Change, Execution & Productivity

Matt Roloff

Star of "Little People, Big World"

Mark Lynas

Environmental Writer; Author of "Our Final Warning: Six Degrees of Climate Emergency"

Jason Young

Former Senior-Level Manager at Southwest Airlines & Founder of Culturetopia

Alan November

International Leader in Education Technology & Author of NYT Bestseller "Who Owns the Learning?", Founder of November Learning

Sandra Fluke

Lawyer, Social Justice Advocate, Women's Health Expert

Dale Dougherty

Founder of MAKE Magazine, Creator of Maker Faire, Founder & CEO of Maker Media

IronE Singleton

Best known as Theodore "T-Dog" Douglas on AMC's "The Walking Dead"

Monica Pearson

First Female & African-American News Anchor in Atlanta

Streeter Seidell

Comedian, Writer for SNL & Contributor to CollegeHumor.com

Bunker Roy

Founder of Barefoot College

Lois Lowry

Newbery Medal-Winning Author of "Number the Stars" and "The Giver"

Olivia Ward

Winner of "Biggest Loser" Season 11

Lou Waters

Aging Expert, Journalist & Former CNN Media Personality; Anchor of "Coming of Age"

Where Are They Now: Lou Waters

Charles Limb

Associate Professor of Otolaryngology-Head and Neck Surgery

Charlene Strong

Gay Rights Activist

Mondo Guerra

Fashion Designer & Advocate for HIV/AIDS Awareness

Brittney Griner

WNBA Player for the Phoenix Mercury & Author of "In My Skin"

Brittney Griner's first press conference since being released