• 8 Architecture and energy conservation
• 8 Sustainable architecture
• 7 Architecture, Modern
• 4 Local transit
• 3 Transportation
• 2 Environmental aspects
• 1 Aeronautics
• 1 Architecture
• 1 Bicycles
• 1 Cable cars (Streetcars)
• 1 Congestion pricing
• 1 Conservation of natural resources
• 1 Cycling
• 1 Energy consumption
• 1 Food
• 1 Greenhouse gas mitigation
• 1 Natural resources
• 1 Piano, Renzo
• 1 Rivers
• 1 Stream restoration
• 1 Synthetic fuels

• 14 Kontentreal (Firm)
• 13 Willoughby, Midori
• 11 Fettig, Tad
• 1 Bernard, Veronique
• 1 Decena, Mark

• 14 English

• 2 Netherlands
• 1 Cairo (Egypt)
• 1 France
• 1 Korea (South)
• 1 London (England)
• 1 Melbourne (Vic.)
• 1 New Orleans (La.)
• 1 Oregon
• 1 Paris
• 1 Paris (France)
• 1 Portland
• 1 Portland (Or.)

• 14 Documentary television programs
• 14 Nonfiction television programs

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