53 speakers from United States
- Ray Anderson
- Don Beck
- Janine Benyus
- Lester Brown
- John Cavanagh
- Adam Davis
- Frank Dixon
- Amy Domini
- Mike Eckhart
- Christopher Flavin
- Gil Friend
- Ashok Gangadean
- Amy Goodman
- Jonathan Granoff
- Mark Halle
- Thom Hartmann
- Randall Hayes
- Richard Heinberg
- Julia Butterfly Hill
- Bill Joy
- Robert F Kennedy Jr
- James Leape
- Erika Lesser
- Andy Lipkis
- Amory Lovins
- Jerry Mander
- Stephen Marglin
- Bob McChesney
- William McDonough
- Bill McKibben
- Frances Moore Lappe
- John Nichols
- David Orr
- John Perkins
- Paul Rice
- Marshall Rosenberg
- Jeffrey Sachs
- Elisabet Sahtouris
- Danny Schechter
- Eric Schlosser
- Matthew Simmons
- Bruce Sterling
- Terry Tamminen
- Terry Tempest Williams
- Robert Thurman
- John Todd
- Michael Totten
- Mary Evelyn Tucker
- Lynne Twist
- Vijay Vaitheeswaran
- Sim Van der Ryn
- Lori Wallach
- Neale Donald Walsch
Speakers around the World
View speakers by continent: Oceania, Europe, North America, South America, Asia, Africa
