British artist Marcus Coates thinks Nature can help address the concerns of the urban poor. So he's trained himself to be an animal, so as to bring Nature to them. He goes to slums, gathers groups of the local residents, and then does a shamanistic trance thing in which he "journeys to the lower world" to seek the wisdom of animal spirits. He does this while wearing a deer's head and skin, and uttering grunts and cries. Sometimes he'll wear a horse's head, or a badger hat. More about him here and here. Check out the video to see him in action.