Image credit | Sustainable Cities

The Züri-Sack, the only officially approved waste sack in Zürich since 1993. Copyright: ERZ Entsorgung + Recycling Zürich. Photographer: Zeljko Gataric

WWF headquarters in Zeist, courtesy of Frans Sellies, Flickr

http://www.flickr.com/photos/dacitydrifter/2324800833/

http://www.flickr.com/photos/mikkoit/387059338/

Carlsberg Gate, photo by Sarah Armitage

Fæstningens Materialgård, photo by Sarah Armitage

Image:thebristolkid December 30, 2008, Flickr, Creative Commons

Image: Troels Heinen/City of Copenhagen

Save water, 7 Jun 2006, By Squink, Flickr, Creative Commons

Garbage, Cambodia, 29 sept 2007, By jparachute, Flickr, Creative Commons

Vienna biomass power plant, courtesy of ÖBf-Archiv/ SWH

BIke-City housing project, play area in yard, Courtesy of building developer GESIBA

Photo on the left, "Træstubben" kindly borrowed from Realdania; On the right, view from above, with permission from Peter Østergaard/Eniro.

Illustration of hydrogen community, courtesy of Bass Baltic Sea Solutions

Venlo Greenport. visal by: Urban Affairs, De Urbanisten, VHP og A2studio 2009. Coutesy of Studio Marco Vermeulen.

Summer Cycling in New York City, photo: NYC Department of Transportation

Bikes and buses, photo courtesy of Henry Grabar Sage

Moving bicycles into the realm of the ordinary, photo by Sarah Armitage

Bicycles outside one of Copenhagen's metro stations, photo by Sarah Armitage

Girl at lake in Växsjö, Flickr Creative Commons

Freiburg - Vauban, 17 June 2008, by Carnotzet, Flickr Creative Commons

Vancouver skyline by BratoDB, March 25 2007, Flickr Creative Commons

iStock Photo

jonathanvlarocca, Flickr Creative Commons

Upton, courtesy of Homes & Communities Agency

http://www.flickr.com/photos/gregturner/445911478/sizes/m/

Photo: Laurent Barelier

New York bus, 2004, By Malene Freudendal-Pedersen

World Climate Solution, Copenhagen (2010). Photo: Signe Cecilie Nørgaard

On the former site of the Royal Porcelain factory, developers have preserved reminders of the area's history--here the classic Royal Porcelain floral pattern on the doorframe--as a means of creating place-based identity. Photo by Sarah Armitage.

Torraca enlightened by LED lights. Photo by Filadelfio Cammarano, courtesy of ELETTRONICA GELBISON ©.

St. George Street, in courtesy of Brown + Storey Architects.

Food show at Todmorden school. Courtesy of Incredible Edible Todmorden, 22 June 2009.

Michael Braungart, http://www.flickr.com/photos/calclid/1752285801/

Children of Victoria Park Primary School. Courtesy of Tipton Litter Watch

Photo credit: Surbana Urban Planning Group

Wuxi Tian Yi. Photo by Adam Mørk copyright, courtesy of SHL.

Vindmøller, July 29, 2009 by fotos de jctopfoto

Photographer Thomas Larsen

Maximilian Dörrbecker Wikipedia Creative Commons

http://www.flickr.com/photos/code_martial/2199226416/

Ørestad. Photo: Signe Cecilie

Sustainable Cities Talks, Danish pavillion at Venice Biennale, 12 September 2008, foto DAC

Photo: Stine Sonne

Project Green Light, Monday Morning

Little Franklin Garden, Brooklyn, NYC. Photo: Signe Cecilie Nørgaard

Image: Romses Architects

Tom’s/Danida/IBIS, School in Ghana.

By: Johndal sep. 6. 2008, floods in morpeth uk, Flickr Creative Commons

World Climate Solution. Photo: Signe Cecilie Nørgaard

City Sketch

Metrolinx

The picture is borrowed from the conference website

http://www.flickr.com/photos/brettoliver/1004666956/

Hyderabad by http://www.flickr.com/photos/manoj_vm/1553345542/

http://www.flickr.com/photos/mykellenicole/2632320935/

The ZEROcompany. Photo: Linak, 5. November. 2010.

South facing homes in BedZED. Photo: Marcus Lyon. Flickr Creative Commons.

Bus on The Strip May 8 2008 by Bracani....Anonio, Flickr Creative Commons

Photo: Sustainable Cities™

http://www.flickr.com/photos/lukeharby/117224888/

Landstingssalen, Christiansborg. Photo: Signe Cecilie, 2. November 2010

http://www.flickr.com/photos/otispics/2260850521/

The layout of the EcoArchWiki is simple and logical. Illustration courtesy of EcoArchWiki.

Image: andreasnilsson1976, April 17, 2007, Flickr, Creative Commons

Sunflower 10094 by Rs3, Wikipedia, Creative Commons

Roof tops and ’ventilation lanes’ of Stuttgart, courtesy of Stuttgart Municipality

Image from City of Stockholm website, developed by Oscar Properties through Herzog & de Meuron.

Ted Turner and Sir Richard Branson at the Global Climate Summit. Photo Signe Cecilie Jochumsen.

http://www.trendhunter.com/photos/30483

iStock Photo

New Songdo International Development. Courtesy of Gale International.

Voltaic Systems

http://www.flickr.com/photos/powerhouse_museum_photography/2386116409/ (Image from Sydney)

Berlin children playing in an open space in the city, 4 Dec. 2007, By Henning Thomsen

Photo by ohad, at Flickr, Creative Commons

Digital Sea, designed by Alexandra Institute, in the exhibition Digital Natives. Credit: CAVI og Digital Urban Living, Aarhus Universitet

Singapore down town china town, 23 Nov 2006, By Strange Ones, Flickr, Creative Commons

National Day celebration at Hong Wen School. Photo by martywindle August 6, 2009, Flickr Creative Commons

Marina Barrage, courtesy of PUB, Singapore's National Water Agency ©

the EXPO Axis, Gustavo Ribeiro

http://www.flickr.com/photos/10278546@N05/2509791109/

The river Cheonggyecheon, courtesy of Lykke Leonardsen

Seattle, iStock photo

http://www.flickr.com/photos/omnia_mutantur/182785792/

Water, Flickr, Creative Commons

iStock Photo

Yellow taxi in San Francisco. Igancio Guerra, February 4 2009, Flickr Creative Commons.

Radish in baskets, Johnny Hunter, 26 May 2007.

Offshore wind turbines at Samsoe, By Samsoe Energy Academy

Australian fire danger, 5 Feb 2007, By OzBex, Flickr, Creative Commons

Photo by harry_nl, Flick Creative Commons

Shanghai electricity, 19 March 2008 By Henning Thomsen, Flickr, Creative Commons

Delhi, iStock photo

POMA - AlternativeMedia

The worlds second largest solar heating system. Photo: The Municipality of RingKøbing-Skjern

Geothermal borehole house, 14 Mar 2008, By Lydurs, Flickr, Creative Commons

Forest, Store Torv, Aarhus. Photo: Signe Cecilie

Photo: Realdania 'Fremtidens forstæder'

House in the Suburb. Photo: Tine Skou

Norman Foster's Crystal Island, Moscow, rendering. Photo: Foster and Partners

Photo: Lara Hale

iStockphoto

Illustration by Shira Golding, April 29 2009, Flickr Creative Commons

London City, iStock

Porto Alegre skyline by Eurivan Barbosa 27. January 2007 Wikipedia Creative Commons

Portland summer evening by StuSeeger, June 2006, Flickr Creative Commons

Photo: Eva Bjerring

Sundholmskvarteret. Photo: Arne Hansen / The Municiplaity of Copenhagen

Perth and the Swan River, 21 Jul 2007, By anNZstream, Flickr, Creative Commons

http://www.flickr.com/photos/kylemay/1471408434/

Paimio Sanatorium with the surrounding Finnish forests. Photo by stgoweb, Flickr Creative Commons

Digestien ved Kappel, Onsevig. Foto: Vagn Nielsen. Venligst udlånt af Lolland Kommune.

The 10 One Planet principles of sustainability. Courtesy of Bioregional

A new district planned for Copenhagen, photo by Sarah Armitage

Illustration of Stige Island, courtesy of Birgit Bjerre Laursen, Municipality of Odense.

Illustration: Juul & Frost, courtesy of Odense Municipality

http://www.flickr.com/photos/phoenixation/3060474889/

Fish, By VictoriaPeckham, Flickr, Creative Commons

Rooftop garden in Greenpoint, Brooklyn. Photo by Elkin, August 1 2009, Flickr Creative Commons

Placing turbines in NYC's East River. Photo taken by Kris Unger of Verdant Power Inc.

Walk the high line, courtesy of Jesper Nørgaard Pagh

More public resting places will help to make New York City more livable for elderly residents. Photo: Signe Cecilie

NYC roof top school garden. Courtesy of Rachel Kangas.

Water Towers New York City, 29 Sep 2007 by TheBigSpot, Flickr Creative Commons

Old trees from Vesterbro get new life in Ørestad City Park. Photo by Ole Ziegler, courtesy of By & Havn

Image: andreasnilsson1976 July 1. 2008, Flickr Creative Commons

Kibera shanty town 7 June 2007 By genvessel, Flickr, Creative Commons

Bike lane in the Netherlands. Photo: Joshua Joseph

Copenhagen commuters can bring bicycles on S-trains, free of charge; photo by Sarah Armitage

Montreal, Flickr Creative Commons

Ulrich Knaack and Kim Herforth Nielsen. Photo: Fredrik Gyllenhoff

The inhabitants are actively involved in the city's environmental initiative. Car-free-sunday is one of the initiatives. Photo: Maria Nørlyng Leal. Nov 2, 2010

Pixel Building. Picture: Charles Van den Broek

Heron at Boondall Wetlands, 5 Jul 2008, By Richard Fisher, Flickr, Creative Commons

Coventry City Council watercolour, February 26 2009, Flickr Creative Commons

Desert, iStock 000004527064

Photo: Kent Matinussen, 2010

Illustration of Macintosh Village, top left is The Green Building. Courtesy of Taylor Woodrow, Terry Farrell & Partners

The townscape of Bo01. By Free Range Jack 15 November 2007, Flickr Creative Commons

Herbert Girardet, photo by Hinrich Franck

Richard Burdett, foto courtesy of Realdania

George Monbiot, http://www.flickr.com/photos/ekkaia/

View from Palacio de la Prensa, march 5, 2008, by cesarastudillo, Flickr Creative Commons.

Bycycle station, Lyon, 27 Oct 2005, By Frederic Bonifas, Flickr, Creative Commons

The roof of Lewisham Town Hall has been planted since April 2009, courtesy of Dusty Gedge, LivingRoofs

Tomatoes in London,Photo by Nick Saltmarsh, November 2008, Flickr, Creative Commons

London Olympic Park Sign 4 June 2008 by Ben Scicluna, Flickr, Creative Commons

Henning Thomsen

Algae, photo by Xalamay, July 2007, Flickr Creative Commons

Lewisham Park, 5 Nov, 2007. Courtesy of Ewan-M, Flickr Creative Commons.

London bus by E01, Flickr Creative Commons

Habour, South, Køge. Photo: The Municipality of Køge

Kawasaki City, 6 April 2008, By Tsuchiya Yoshihiro, Flickr, Creative Commons

Urban gardening in Johanneburg, courtesy of The Berkana Institute

Children in fountain water, By Henning Thomsen, Sustainable Cities

Jubilee Park lake in Jamshedpur, 26 Oct 2007 by Keki Malegamwala, Flickr, Creative Commons

City traffic - bus, car and pedestrians 7 July 2006, by Alex S Flickr Creative Commons

Photo: Silverb by me maya, June 17 2006, Flickr Creative Commons

Climate Village, Cancún. Photo: Signe Cecilie Nørgaard

Image: lambchops 30 September, 2007, Flickr Creative Commons

Photo: Sustainable Cities™

Bølling Sø seen from the sky, courtesy of Torsten Sand Christensen from Aiolos Luftfoto.

Photo by Malene Freudendal-Pedersen

Children looking at a model of Solhuset, photo courtesy of Hørsholm municipality.

School children working in the vegetable gardens, courtesy of Haver til Maver, Thomas Nielsen.

iStockphoto

Image: by ANATOLI AXELROD July 13, 2008, Flickr, Creative Commens

http://www.flickr.com/photos/keso/296190358/

Hoogvliet architecture, 11 April, By Jager Jansen Achitecten, Flickr Creative Commons

Hong Kong Mid Levels Escalator at Rush Hour. 5 May 2008, Photo by goosmurf, Flickr Creative commons, photo # 2467438696.

Image: moriza, May 19 2006, Flickr Creative Commons

Jogging in Central Park, New York City, USA. Gruban / Patrick Gruban. Wikimedia.

Havana, by Julie Abitz

Hannover EXPO train, year 2000, Flickr, Creative Commons

School Cohesion Project, courtesy of Hampshire Archives.

Wet Wood, August 18 2009, courtesy of Anders Ademark, Flickr.

The Dalmannkai. Photo by Daniel Barthmann, courtesy of HafenCity Hamburg GmbH

Ørestad. Photo: Signe Cecilie

Green Growth Council meeting, April 13th, Photo: Monday Morning

http://www.flickr.com/photos/larod/399152781/

http://www.flickr.com/photos/cmmorel/162314926/

Central Park, New York, 1. Sept. 2008, By Ed Yourdon, Flickr, Creative Commons

Göteborg, 15 June 2008, by eva the Weaver, Flickr Creative Commons

Source: Port of Göteborg

MovingSchool, courtesy of MovingSchool.org

Foto: Fabio Aro, Flickr Creative Commons

Foto: Hausenberg, Study trip in Sluseholmen

Circular farm shell, 2008, By Chris Jacobs

Foto: Georg Guensberg

Anna Esbjørn Hess (DAC) presents at JJW. Photo: Anders Hviid / JJW Architects

Photo: Stine Sonne, Sustainable Cities™

Image: tnarik May 24, 2007, Flickr, Creative Commons

An exhibition of electric and hybrid cars, the Danish Motor Industry Research Centre, 2008. Photo: Jørgen Anker Simonsen, Frederikshavn Municipality

Organic waste, courtesy of Frankston City Council

The top of the Commerzbank Tower overlooking Frankfurt, April 22, 2007, by Chaouki, Flickr Creative Commons

Garden in the sky. Photo: Flickr Creative Commons / Henning Thomsen

Bananas, dates and garlic, 26 Aug 2005, By CharlesFred, Flickr, Creative Commons

Photo taken by Joshua Joseph.

Wadi in Ruwenbos, photo Enschede_Stad.nl

iStock photo

Siemens Smart Chopper, Green Solution, COP16. Photo: Signe Cecilie Nørgaard

Emscher Park by dysturb, Flickr Creative Commons

Foto: Eva Bjerring

bjornmeansbear, February 21 2009, Flickr Creative Commons

New York, East Side. Photo: Signe Cecilie Nørgaard

Cracked soil, 24 Dec 2006, By Andyrob, Flickr, Creative Commons

Ecobuild Vision. Foto: Signe Cecilie Jochumsen

http://www.flickr.com/photos/seandreilinger/474751797/sizes/m/

Grazing cows, 13 Jun 2008, By Law keven, Flickr, Creative Commons

Durban City. Photo: Augusto Areal

Stockholm Photo: The City of Stockholm

Illustration of the proposed eco-city Dongtan, courtesy of Arup

Foto: andreasnilsson 1976, 27. maj 2008, Flickr Creative Commons

People using Copenhagen's citybikes. Photo taken by Joshua Joseph.

Suburban sprawl outside Houston, Texas. Photo: Mark Strozier, Flickr Creative Commons

iStock Photo

Outside the Siemens Dome, Local and Regional Leaders World Summit, Mexico City, 18. November, 2010. Foto: Maria Nørlyng

Dar Es Salaam, Flickr Creative Commons

Photo: Danish Commission on Climate Change Policy

Foto: Malene Freudendal-Pedersen

Image: Troels Heien for Københavns Kommune

Cyclists in Barigui Park. Courtesy of www.curitiba-travel.com.br

The green and sustainable Curitiba. Courtesy of whl.travel, 19. February 2010.

Winner proposal by Sturgess Architecture

Image: !Stock 00000443198

Photo: Marc Hill, The Eden Project

Crane with garbage at Vestforbrænding, courtesy of Vestforbrænding

Woman harvesting rhubarb in the urban gardens in Ørestaden. Courtesy of Ole Ziegler, By & Havn.

A bike in Copenhagen, March 23, 2008, by Kai, Flickr Creative Commons.

The Mobile Science Center project. Youngsters building sustainable urban environtment with reneable energy. Courtesy of Sustainable Development.

Visualization: Svendborg Architects.

Crowne Plaza Copenhagen, Ørestad. Photo: Crowne Plaza Copenhagen Towers, 23. March, 2010.

Fæstningens Materialgaard, Copenhagen. Photo by Sarah Armitage

Green Lighthouse. Rendering: Christensen & Co. Architects.

Future Copenhagen district Nordholmene, courtesy of COBE

Blue areas of lime mortar and marble plastering on the gable of Dannebrogsgade, Vesterbro. Courtesy of CityGardenNetwork.

Copenhagen harbour bath by Esben Bruun, courtesy of PLOT

Inside of the Gasometer, 15 april 2009, courtisy of JJW arkitekter

Excerpt from the FacetheClimate.org website, courtesy of Face the Climate.

Windmills at Middelgrunden, Copenhagen, 5 August 2007, By Andjohan, Flickr, Creative Commons

Amager Strandpark, courtesy of Hasløv & Kjærsgaard Architects.

Image: CopenhagenX

Photo: Signe Cecilie Jochumsen

http://www.flickr.com/photos/29780116@N03/2820816952/

Image: House and furniture made from recycled materials, by Mette Bak Andersen

IFHP Conference in Copenhagen

Ravnsborggade visualisation, courtesy of the City of Copenhagen/Ekstrakt

The Climate Change Village, The Mexican area, Cancún. Photo: Signe Cecilie Nørgaard

http://www.flickr.com/photos/cactus23/2282537983/

Boble Plads (The Bubble Square). Photo: Troels Axelsen

World Climate Summit; COP16, Cancún, Ritz Carlton. Photo: Signe Cecilie Nørgaard

Climate World Cup, courtesy of DanWatch.

Bjarke Ingels, World Climate Solution Conference, Bella Centre, Copenhagen. Photo: Signe Cecilie

Cleveleys waterfront. Courtesy of Wyre Borough Council.

Rome, 7 July 2007, By Henning Thomsen, Sustainable Cities

Mayors of the world signing the Mexico City Pact during WMSC in Mexico City. Courtesy of Maria Nørlyng Leal, 21 Nov. 2010

Photo: Henning Thomsen, Byens Øjne

The Marble Church, photo by Sarah Armitage

Chicago, Reflections by terren in Virginia, 20 Feburary 2008, Flickr, Creative Commons

Park in Chicago, Photo by Robert S. Donovan, May 2008, Flickr, Creative Commons

Biomass Wien Simmering, Photo by Georg Guensberg

Illustration of the future city, Kulturpladsen, courtesy of Entasis Architects

Low-energy office, Energinet.dk. Photo: Henning Larsen Architects

iStockphoto

Caracas City slum 28 April 2005 By procsilas, Flickr, Creative Commons

Las Vegas slot machines, 10 Jan 2008 by http2007, Flickr Creative Commons

commons.wikimedia.org/wiki/File: Beijingbicylists

Photo: Wikimedia Commons

Garbage Area of Ezbet El Nakhl; taken by Creap, May 9 2005, Flickr, Creative Commons, Photo # 13067241

Shanghai: Photo: Søren Smidt-Jensen

iStock Photo

iStock photo 1161625

Budapest Bike Night. Courtesy of Mikael Colville-Andersen/Zakka, Flickr

Photo: Henning Thomsen

Slow food, By Thera, Flickr, Creative Commons

View over Boulder, by Molas, 3 march 2007, Flickr Creative Commons

Bogotá city, Transmilenio transitpoint, 25 May 2008, By S2RD2, Flickr, Creative Commons

Mexico City, 20 November 2010. Photo: Maria Nørlyng.

Photo: Fredrik Gyllenhoff

Photo by Secondarywaltz via the Wikimedia Commons.

Photo courtesy of Henry Grabar Sage

Photo by andreasnilsson1976, November 16 2006, Flickr Creative Commons

Beware the litter wardens, 18 July 2008, By thejeton, Flickr, Creative Commons

With their bright colors, Beijing’s public exercise facilities resemble playgrounds. Courtesy of Alex Balfour, London

BedZED, March 2007, photo by Tom Chance and BioRegional

Port Forum, Barcelona, by Luca Vez, 24 feb, 2009, Flickr Creative Commons

Barcelona, by MorBCN, Flickr Creative Commons

Green stormwater channel in Augustenborg, Photo by City of Malmö, malmo.se/sustainablecity

Knuden - Cultural Haunt, Ørestad North.

Allotment garden in Århus. Lars Kloster Silkjaer, June 24, 2007, Flicr Creative Commons.

Amsterdam Bijlmermeer, courtesy of Juul Frost Architects

http://www.flickr.com/photos/25366722@N02/2857521887/

http://www.flickr.com/photos/nelemercury/288336180/sizes/o/

Bike lane in Albertslund. Photo: Ezra Goldman

Foodgarden and compost bin. Courtesy of Urban Ecology Australia.

Townhouses, courtesy of Urban Ecology Australia

Himmerlandstien. Photo: The City of Aalestrup / Visit Himmerland

Bangkok Interstate, 2008, by Julie Abitz

Collage: Luna Sofie Høj, Sara Le Klint Hansen, Sofie Emily Amalie Henriksen

Photo: WHO/Chris De Bode

Photo credit: VEKSØ

Hugging Earth. Photo: Flickr Creative Commons

http://www.flickr.com/photos/83575265@N00/2534037593/in/pool-350

The Municiplaity of Copenhagen

http://www.flickr.com/photos/kwbridge/2541993688/

Photo: Dominics pics, October 7 2009, Flickr Creative Commons

In the back, to the left, Allan Schrøder Pedersen, og to the right, Jesper Gottlieb. Credit: Catherine C. Hemmert Lund.

Photo: Fredrik Gyllenhoff / Flickr Creative Common

From left to right: Mayor Ebrard, Mayor Bloomberg, Mayor Masondo, Mayor Johnson, Mayor Bjerregaard and Guvernor Bowo. Foto: Fredrik Gyllenhoff