Perez Hilton

Popular Celebrity Gossip Blogger; Podcast Host, YouTuber & Owner of "My True 10"

Dr. Francis Collins

Head, Molecular Genetics Section, National Human Genome Research Institute; 16th Director, National Institutes of Health

Dr. Francis Collins: "I don't see a conflict" between science and faith ...

Lenore Skenazy

Host of "World's Worst Mom" on Discovery Life; President of Let Grow & Founder of the Free-Range Kids Movement

Harvey Mansfield

Political Philosopher, Author & Distinguished Professor

Julie Burstein

Peabody Award-Winning Radio Producer, TED Speaker and Bestselling Author of "Spark: How Creativity Works"

Juliet Schor

Professor of Sociology at Boston College

Robert Bryce

Energy Expert, Veteran Journalist & Acclaimed Author

Ambassador Dennis Ross

Author, Counselor & William Davidson Distinguished Fellow at The Washington Institute; Former Special Assistant to President Obama

David M. Rubenstein

Co-Founder & Co-CEO of The Carlyle Group

Risa Lavizzo-Mourey

Healthcare Expert and President Emerita of the Robert Wood Johnson Foundation

Nathan Myhrvold

Founder of Intellectual Ventures; Former Chief Strategist & Chief Technology Officer of the Microsoft Corporation; Author of “Modernist Cuisine: The Art and Science of Cooking"

Sebastian Copeland

Adventurer, Environmental Activist, Award-Winning Photographer, Author, Lecturer & Founder of the Sedna Foundation

Amanda Lindhout

Executive Director of The Global Enrichment Foundation; Captivity Survivor, Inspirational Speaker & Author of "A House in the Sky"

Matt Miller

Fortune Columnist, Author & Radio Host