Joanna Macy on Deep Ecology
Deep Ecology, when it appeared in my life, made immediate sense. To me it is more than a label, it’s the way our world is structured. I take it as a secular equivalent to the Buddha’s teaching of dependent co-arising–and use it that way in my work.
The term was coined by Norwegian philosopher Arne Naess to contrast with environmentalism for purely human interests. Deep ecology is both a school of thought (Naess’s ecosophy and Henryk Skolimowski’s ecophilosophy) and a movement (the deep, long range ecology movement, described early on by Bill Devall and George Sessions). 
It has also inspired an array of experiential practices: deep ecology work, developed by John Seed, myself, and others. This form of group work helps to decondition us from centuries from culturally induced anthropocentrism, and to heal our broken relationship with the natural world. It’s an intrinsic part of the Work That Reconnects.
My Teachers: As for all of us in deep ecology work, the natural world is our primary teacher. Among key mentors in childhood I count Spotty, a wise horse, and a particular maple tree. From http://www.joannamacy.net