• 3 Videos, Slides, Films

• 2 DVDs

• 2 Climatic changes
• 2 Politics and government
• 1 Earth Day
• 1 Ecology
• 1 Environmentalism
• 1 Environmentalists
• 1 Global warming
• 1 History

• 3 WGBH (Television station : Boston, Mass.)
• 2 Documentary Group (New York, N.Y.)
• 2 PBS Distribution (Firm)
• 2 Public Broadcasting Service (U.S.)
• 2 Upin, Catherine
• 1 Brand, Stewart
• 1 Ehrlich, Paul R
• 1 Giacchino, Michael
• 1 Hayes, Denis, 1944-
• 1 Hockenberry, John
• 1 Lovins, L. Hunter, 1950-
• 1 Low, John E.
• 1 McCloskey, Paul N., 1927-
• 1 Meadows, Dennis L
• 1 Mills, Stephanie, 1948-
• 1 Robert Stone Productions
• 1 Schweickart, Rusty
• 1 Stone, Robert, 1958-
• 1 Udall, Stewart L.
• 1 WGBH Educational Foundation

• 3 English

• 3 United States

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