produced by Barak Goodman, Rachel Dretzin ; directed by Barak Goodman ; written by Rachel Dretzin ; a Frontline co-production with 10/20 Productions, LLC ; WGBH Educational Foundation ; WGBH Boston
a production of WGBH Boston and WITF, Harrisburg; produced by Beth Hager and Randall MacLowry ; written by Ken Emerson and Randall MacLowry ; director, Randall MacLowry
Partridge Productions ; written by Phil Agland ; produced by Phil Agland, Michael Rosenberg ; directed by David Heeley ; a presentation of WNET/Thirteen in association with the Nature Conservancy
a production of Public Affairs Television, Inc. ; written by Bill Moyers, David Brancaccio, Judy Stoeven Davies ; directed by Mark Ganguzza ; a presentation of Thirteen/WNET New York
a co-production of WGBH, Boston and Brian Lapping Associates in association with BBC and La Sept/ARTE ; producer/directors, Dai Richards ... [and others]