An international group of artists with Cecilia Wendt, Sweden and Rikke Luther, Denmark, (co-founders of the artist group N55) Julio Castro, Mexico, and Brett Bloom, US. Who deal with urbanism, ecology and of course learning. They definately share affinities with free soil, check their site.
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.