Walking and urban research projects have a big place in my heart. Here is one from Chicago, with quite an extensive bibliography, and a range of events taking place between September 9 - October 22, 2005.
A lot of great people are participating but for the sake of walking I'll just mention: freewalking.org/
- Go explore.
Gardending Superfund Sites is an art project that fosters discourse around the issues of nature preservation, industry, and activism. Information and workshops with students and community groups to create a call to action to high tech industries to take responsibility for their actions.