Faeces, electric eels and fruit would power conceptual communities designed by Bartlett School of Architecture graduate Catrina Stewart. More »

Dezeen Screen: in this fourth movie filmed by Dezeen in 2009 at the Shenzhen & Hong Kong Architecture Biennale, designers Joseph Grima and Jeffrey Johnson explain their urban farm project Landgrab City. Watch the movie »

Belgian architect Vincent Callebaut has designed a conceptual transport system that would involve airships powered by seaweed. More »

As part of the Shenzhen & Hong Kong bi-city Biennale of Urbanism/Architecture, Joseph Grima, Jeffrey Johnson and José Esparza have created a farm in the middle of an urban square in Shenzhen.

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Here's the third installment from the Oogst self-sufficient farming project by Dutch designers Tjep.: Oogst 1000 Wonderland, which features a farm, restaurant, hotel and amusement park designed to sustain 1,000 visitors a day. More »

Here is the second of three proposals by Dutch designers Tjep. for self-sufficient farms - this time aiming to to house and provide food for up to 100 people within a diametre of 400 metres. More »

Here is the first of three proposals by Dutch designers Tjep. for self-sufficient farms that provide inhabitants with everything they require, including energy, heat, oxygen, food and waste management. Update: this project is included in Dezeen Book of Ideas, which is on sale now for £12. More »

Public Farm One by Work Architecture Company is an urban farming project, shown outside the P.S.1 Contemporary Art Centre in New York last month. More »

Dublin architects Tierney Haines are about to start building this timber cottage in Tipperary. More »

The Farm Project, a mobile working kitchen with live-in livestock, travelled to Florida for Design Miami last month. More »