Ethan Nadelmann
Jim Cramer
David Kamp
Judy Woodruff
Alex Kuczynski
Dinesh D'Souza
Richard Clarke
Bill O'Reilly
Tom Schaller
Michael S. Steele
Lou Dobbs
Mike Wallace
Barry Lando
Donna Shalala
Jed Babbin
Chuck Schumer
Wendy Kopp
Charlie LeDuff
Steven Pinker
Debra Dickerson
Michael Oppenheimer
Sheryl WuDunn
Lance Armstrong
Shashi Tharoor
Zev Chafets
Craig Venter
Nina Jablonski
Larry King
Ben & Jerry
Mark Frauenfelder
Michael Specter
Ted Koppel
Nicholas Kristof
Michael Eric Dyson
Ed Viesturs
Ayaan Hirsi Ali
Jerome Groopman
Willie Nelson
Benjamin Barber
Katie Couric
Gwen Ifill
Madeleine Albright
Jabari Asim
Clive James
Colin Beavan
Jeannette Walls
Vali Nasr
Dr. Richard Land
John Kerry
Elaine Pagels
Paulina Porizkova
Sean Penn
Russell Simmons
Dr. Andrew Weil
David Walker
Madeleine Bordallo
Neil deGrasse Tyson
Malcolm Gladwell
Gina Kolata
Conn Iggulden
Richard Preston
Nassi Nicholas Taleb
Salman Rushdie, Jane Fonda
Jann Wenner
William Langewiesche
Walter Isaacson
Howard Dean
Randy Kearse, Rep. Tom Delay
Jared Diamond
John Amaechi
Bay Buchanan, Bob Deans
Jimmy Wales
Rep. Jan Schakowsky, Leon Botstein
Jessica Valenti
Carl Bernstein
Cullen Murphy
Dr. Michael D. Gershon
Josh Wolf
Rep. Ron Paul
Daniel B. Smith
Toby Keith
Anne-Marie Slaughter
Will Schwalbe
Vincent Bugliosi
Tom Hayden
David France
Tom Blanton, Daniel Gilbert
Doug Bailey
Richard Florida, Ben Nelson
Mark Moffett
John Mellencamp
Frank Sulloway
Simon Schama
Anthony D. Romero
Charles Kaiser
Robert Shrum
Evan Osnos
Kathleen Kennedy Townsend
Michael Beschloss
Michael J. Behe
Ian Bogost
Jim Cramer, Tina Brown
Judd Apatow
Michael Jacobson
Jerry Miller, Spencer Wells
Michael Wallis
Mike Huckabee
Nathan Sawaya
Michael Shermer
Richard Branson
Thomas E. Ricks
Bjorn Lomborg
Garrison Keillor
Joel Klein
Ed Begley Jr
Susan Sarandon
Naomi Wolf
Jeffrey Toobin
Thomas Friedman
John Grisham
Tony Bennett
David Schwartz
Charlie Savage
John Mearsheimer
Jim Lovell
John Kao
George Saunders
Stephen Colbert
Gen. Wesley Clark
Chris Jordan
Paul Glastris
Bob Drogin
Garry Kasparov
Craig Newmark
Richard Berman
Col. Lawrence Wilkerson
Walter Kirn