My next book The Ecological Thought is coming out in April. The basic argument is that you don't need to have some special experience of oneness with everything to think and practice ecological awareness. All you need is a functioning mind and a willingness to learn things in life sciences.
The book fuses—perversely for some—Darwin, Dawkins, Dennett, Deleuze and Derrida. Their names all begin with D, I suppose...The idea is that non-trendy utilitarian materialism and deconstruction could have a very good conversation with each other, to each other's benefit.
The good news is that even in reductionism and extreme doubt, you can find ecological awareness. So think about how easily you can find it elsewhere.