Jeremy Deller is working to make a habitat for bats in London to promote wildlife friendly building design and public engagement with ecological issues. You can take part in monthly design challenges and next spring there will be a national design competition for artists, designers, architechts and the like for the final design of the house. The website is just up with resources and more. Deller is probably best known for the re-enactment of a miners strike: "The Battle of Orgreave"
The project intersects with recent public debate in Copenhagen about air pollution in the city. In collaboration with Senior Scientist Jørgen Brandt from The National Environmental Research Institute in Denmark a first prototype is developed for making an indicator that can be placed in the city and display local levels of pollution as well as pollution forecasts on individual streets. The project holds an open source script for displaying data from the Internet in a variety of forms.