Abhi Nemani

Former Chief Data Officer for the City of Los Angeles, Co-founder of Ethos Labs, Technological Optimist & Political Philosophy Nerd

Fawzia Koofi

Former Member of the Afghan Parliament; International Advocate for Women's Rights

Lou Waters

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

Where Are They Now: Lou Waters

Dennis Avery

Former Director, Center for Global Food Issues at the Hudson Institute

Matt Roloff

Star of "Little People, Big World"

Sandra Fluke

Lawyer, Social Justice Advocate, Women's Health Expert

Kevin Bales

Professor of Contemporary Slavery, & Research Director of the Rights Lab at the University of Nottingham; Co-Founder of Free the Slaves

Charlene Strong

Gay Rights Activist

Todd Purdum

Senior writer at POLITICO and a contributing editor at Vanity Fair

William Binney

Former NSA Crypto-Mathematician; Whistleblower