• 17 Environmental policy
• 11 Sustainable architecture
• 8 Architecture and energy conservation
• 7 Architecture, Modern
• 5 Energy consumption
• 4 Energy policy
• 4 Environmental aspects
• 3 Design and construction
• 3 Local transit
• 3 Sustainable buildings
• 3 Sustainable design
• 2 Transportation
• 1 Aeronautics
• 1 Architecture
• 1 Automobiles
• 1 Bicycles
• 1 Biomass energy
• 1 Carbon sequestration
• 1 Coal-fired power plants
• 1 Congestion pricing
• 1 Conservation of natural resources
• 1 Cycling
• 1 Ethanol fuel industry
• 1 Food
• 1 Fuel consumption

• 18 Fettig, Tad
• 16 Pitt, Brad, 1963-
• 4 Freeman, Morgan
• 1 Bernard, Veronique

• 20 English

• 2 Netherlands
• 1 Brazil
• 1 Cairo (Egypt)
• 1 California
• 1 France
• 1 Korea (South)
• 1 London (England)
• 1 Melbourne (Vic.)
• 1 New Orleans (La.)
• 1 New York (N.Y.)
• 1 Paris
• 1 Paris (France)

• 20 Documentary television programs

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