Vienna Design Week 2010: Vienna designers Mischer’Traxler made batteries from 700 used coffee capsules to power clocks installed in the window of Nespresso Austria during Vienna Design Week. More »

Vienna Design Week: Vienna designers Dottings presented a series of coffee cups made of recycled aluminium coffee capsules for coffee brand Nespresso in Vienna last week. More »

This mobile phone concept by London designer Patrick Hyland can be charged by the heat in your pocket. More »

A collective of young architects and designers from AlArchitects of Prague have designed a range of jewellery made from recycled medical waste. More »

London design brand Hulger has launched Plumen, a product it describes as "the world's first designer low-energy light bulb". Update: this project is included in Dezeen Book of Ideas, which is on sale now for £12. More »

Here's another project using old carpets (see our earlier post on a chair made of rolled-up carpet), this time handbags by Spanish initiative Maam Project, manufactured by prisoners. More »

Finnish Lahti University of Applied Sciences students Arttu Kuisma and Janne Melajoki have rolled up 250 square-metres of recycled carpet to create this multicoloured chair. More »

These bird and bug boxes have been installed by art and architecture collective London Fieldworks around trees across London in clusters inspired by neighbouring housing. More »

Swedish architects Visiondivision have created this undulating concrete habitat for crayfish in a stream in Sweden. More »

Loove Broms and Li Jönsson of Sweden's Interactive Institute have devised a system of lamps that visually indicate a factory's energy consumption through spotlights. More »

This residential building in Copenhagen with sloping green roofs by Danish architects BIG will be completed in October, and has just won the 2010 Scandinavian Green Roof Award. More »

Bartlett School of Architecture graduate Richard Hardy has shared with us his short film imagining an autonomous, artificially intelligent, sustainable city  More »

University of Lincoln graduate Sebastian Cox has made a range of furniture from unseasoned coppiced hazel wood. More »

London architects Grimshaw and engineers Arup have unveiled this design for an offshore wind turbine.  More »