Klein, Larry screenwriter, producer.

Sapir, Cass., producer.

Quade, Doug.

Sanders, Jay O., 1953- , narrator.

Production Group (Firm)

written and produced by Larry Klein ; produced by Cass Sapir ; a NOVA production by Production Group, Inc. for WGBH Boston.

Vecchione, Judith.

DeNooyer, Rushmore.

Wolfinger, Kirk.

Keach, Stacy.

Quade, Doug.

Else, Jon, 1944-

Brooks, Malcolm.

Lone Wolf Pictures.

WGBH (Television station : Boston, Mass.)

WGBH Video (Firm)

Public Broadcasting Service (U.S.)

a NOVA production by Lone Wolf Pictures for WGBH/Boston ; written and produced by Judith Vecchione and Rushmore DeNooyer ; directed by Kirk Wolfinger.

Richman, Gerald, film producer.

Arledge, Elizabeth, film director, film producer, narrator.

Quade, Doug, film editor.

McCoy, Ben, cinematographer.

Ances, Beau, commentator.

Tanzi, Rudolph E., commentator.

Baumgart, Matthew, commentator.

Bartels, Stephen J., commentator.

Markey, Edward J., commentator.

Low, John E., composer.

Twin Cities Public Television (Saint Paul, Minn.), publisher.

TPT National Productions, production company.

Gurney Street Films, production company.

KTCA-TV (Television station : Saint Paul, Minn.), production company.

Public Broadcasting Service (U.S.) publisher.

PBS Distribution (Firm) film distributor.

a production of TPT National Productions in association with Gurney Street Films ; executive producer, Gerald Richman ; produced and directed by Elizabeth Arledge.

Sahula, Jonathan, television producer.

McMaster, Joseph, television producer, screenwriter.

Wallace, Melanie (Producer)

Swartz, Howard B., television producer.

Aspell, Paula S., television producer.

Judd, Graham, television producer, television director, screenwriter.

Streeter, Sabin, television producer, television director, screenwriter.

MacLowry, Randall, television producer, television director, screenwriter.

Cort, Julia, television producer, television director, screenwriter.

Rosen, Josh, television producer, television director, screenwriter.

DeNooyer, Rushmore, television producer, television director, screenwriter.

Elisco, David screenwriter.

Quade, Doug, television producer, film editor.

Strachan, Anna Lee, television producer.

Greene, Brian, 1963- host.

Audette, Steve, film editor.

Humphreys, Robert, director of photography.

McCarthy, Stephen (Cinematographer)

Tomney, Ed, composer (expression)

Greene, Brian, 1963- Fabric of the cosmos.

32-12 Media (Firm), production company.

Film Posse (Firm), production company.

Spine Films, production company.

Lone Wolf Documentary Group, production company.

ARTE France production company.

National Geographic Channel (Television station : Washington, D.C.), production company.

WGBH Educational Foundation, production company.

PBS Home Video film distributor.

produced and directed by Graham Judd and Sabin Streeter ; telescript by Graham Judd & Sabin Streeter ; story by Joseph McMaster and Graham Judd & Sabin Streeter produced and directed by Randall MacLowry ; telescript by Randall MacLowry ; story by Joseph McMaster and Randall MacLowry produced and directed by Julia Cort and Josh Rosen ; telescript by Julia Cort and Josh Rosen ; story by Joseph McMaster and Josh Rosen (ca. 55 min.) -- produced and directed by Rushmore DeNooyer ; telescript by Rushmore DeNooyer ; story by Joseph McMaster and David Elisco and Rushmore DeNooyer ; produced by Doug Quade ; produced by Anna Lee Strachan (ca. 56 min.)

senior producer, Jonathan Shula ; series executive producer, Joseph McMaster ; senior series producer, Melanie Wallace ; executive producer, Howard Swartz ; senior executive producer, Paula S. Apsell ; a NOVA Production by 32-12 Media (program 1), Film Posse (program 2), Spine Films (program 3), Lone Wolf Documentary Group (program 4) ; in association with ARTE France and National Geographic Channel ; WGBH Educational Foundation.