John Sculley

Vice-Chairman of MDLIVE, Former CEO of Apple Computers & PepsiCo; High-Tech Entrepreneur, Venture Capitalist & Author

Dr. Dean Ornish

Physician, Leading Researcher in Healthcare, Founder of the Preventive Medicine Research Institute & Bestselling Author

Nicholas Christakis

Sol Goldman Family Professor of Social & Natural Science; Director of the Human Nature Lab; Co-Director of the Yale Institute for Network Science

Craig Venter

Founder & CEO of Synthetic Genomics Inc.

Debbie Gibson

Singer-Songwriter and Reality TV Star; "Only In My Dreams"

James Watson

Molecular Biologist, Geneticist & Zoologist

Nicholas Burns

Professor of the Practice of Diplomacy & International Politics, Harvard Kennedy School

Bob Greene

Exercise Guru & Best-Selling Author

Jonathan Bush

Technology Entrepreneur; Co-Founder & Former CEO of athenahealth

Lynsey Addario

American Photojournalist; Contributor for National Geographic & Time Magazine

Christiane Northrup

Authority on Women's Health, Bestselling Author of "Goddesses Never Age"

Joy-Ann Reid

MSNBC Correspondent, Political Author & Host of "The ReidOut"

Medgar and Myrlie: Medgar Evers and the Love Story that Awakened America