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(Arranged Alphabetically by Last Name)
- Julian Agyeman
- Richard Alley (+ background sources)
- Gar Alperovitz (+ background sources)
- Miguel Altieri (background sources)
- Kevin Anderson (+ background sources)
- Ray Anderson (background sources)
- Sir David Attenborough (+ background sources)
- Andrew Bacevich ( background sources)
- Robert Ballard (+ background sources)
- Dan Barber (background sources)
- Maude Barlow (+ background sources)
- Paul Beckwith ( + background sources)
- Jenine Benyus ( + background sources)
- Thomas Berry (+ background sources)
- Wendell Berry (+ background sources)
- Mark Bittman (+ background sources)
- Grace Lee Boggs (background sources)
- Lester Brown (+ background sources)
- Robert Bullard
- Peter Byck (+ background sources)
- Helen Caldicott
- Rachel Carson (+ background sources)
- Majora Carter
- Noam Chomsky (+ background sources)
- Theo Colborn (background sources)
- Ann Cooper (background sources)
- Michael Copps (background sources)
- Herman Daly
- Tim DeChristopher (background sources)
- Sylvia Earle (+ background sources)
- Paul Ehrlich (background sources)
- Daniel Esty (background sources)
- Paul Farmer
- John Bellamy Foster
- Josh Fox (background sources)
- Jennifer Francis
- Pope Francis (background sources)
- Deborah Coons Garcia (background sources)
- Laurie Garrett (background sources)
- Lois Gibbs
- Henry Giroux (background sources)
- Ian Goldin (background sources)
- Amy Goodman
- Tom Goreau (background souces)
- Glen Greenwald (+background sources)
- David Ray Griffin (background sources)
- Karl Grossman (background sources)
- Jane Dye Gussow (background sources)
- Clive Hamilton (background sources)
- Nate Hagens (background sources)
- James Hansen
- Chris Hedges
- Richard Heinberg
- Hazel Henderson (+ background sources)
- John Holdren (+ background sources)
- Rob Hopkins (background sources)
- Michael Hudson (background sources)
- Elaine Ingham (+ background sources)
- Lisa Jackson
- Wes Jackson (background sources)
- John Jeavons (background sources)
- Derek Jensen (+ background sources)
- Kathy Jetñil- Kijiner (background sources)
- Chalmers Johnson (+ background sources)
- Christine Jones (background sources)
- Van Jones
- Tony Juniper (background sources)
- David Keith
- Ibram X. Kendi (background sources)
- Andrew Kimbrell (background sources)
- Michael Klare (background sources)
- Naomi Klein (+ background sources)
- Elizabeth Kolbert ( + background sources)
- David Korten (+ background sources)
- Nicholas Kristof (background sources)
- James Howard Kunstler
- Rattan Lal (background sources)
- Anna Lappé
- Frances Moore Lappé (background sources)
- Jeremy Leggett (background sources)
- Johannes Lehmann (background sources)
- Aldo Leopold
- Lawrence Lessig (background sources)
- John Liu (background sources)
- James Lovelock (background sources)
- Wangari Maathai
- Jerry Mander (background sources)
- Michael E. Mann
- George Marshall
- Bob Massie
- Melina Laboucan Massimo (background sources)
- Jane Mayer
- Gina McCarthy (+ background sources)
- James J. McCarthy
- Ray McGovern (+ background sources)
- Bill McKibben (+ background sources)
- Guy McPherson (+ background sources)
- Anuradha Mittal (background sources)
- George Monbiot (+ background sources)
- David Montgomery ( background sources)
- Frances Moore-Lappé (background sources)
- Bill Morrison (background sources)
- John Muir (+ background sources)
- Ralph Nader (+ background sources)
- Kumi Naidoo (+ background sources)
- Marion Nestle
- Luisa Neubauer (background sources)
- Helena Norberg-Hodge (background sources)
- Naomi Oreskes (+ background soures)
- Robert Paarlberg (+ background sources)
- Greg Palast
- John Perkins
- Thomas Piketty
- John Pilger
- Michael Pollan (+ background sources)
- David Quammen (+ background sources)
- Kate Raworth
- Bill Rees (background sources)
- Lord Martin Rees (background sources)
- Robert Reich
- Eric Rignot (background sources)
- Mary Robinson
- Johan Rockström (bacground sources)
- Joe Romm (background sources)
- Arundhati Roy (+ background sources)
- Michael C. Ruppert (background sources)
- Allan Savory + (background sources)
- Stephen Schneider (background sources)
- Juliet Schor (background sources)
- Daniel Schrag (background sources)
- Devinder Sharma (background sources)
- Rajendra Singh (background sources)
- Vandana Shiva (+ background sources)
- Matthew Simmons (background sources)
- Vaclav Smil (background sources)
- Jeffery Smith (background sources)
- James Gustave (Gus) Speth
- Paul Stamets (background sources)
- Gill Stein (background sources)
- Achim Steiner (+ background sourcesbackground sources)
- Sir Nicholas Stern (background sources)
- Josef Stiglitz (background sources).
- Oliver Stone (+ background sources)
- David Suzuki (+ background sources)
- Strobe Talbott (background sources)
- Greta Thunberg (background information)
- John Todd
- Bishop Desmond Tutu
- Yanis Varoufakis (background sources)
- Thierry Vrain (background sources)
- Peter Wadhams
- Lori Wallach
- Peter Ward
- David Wadell (+ background sources)
- David Wallace-Wells (+ background sources)
- Edward O. Wilson
- Richard Wolff (background sources)
