And, I would add, especially in selling that to people who have read Marx, his rebuttal of Malthusianism, and his acknowledgement to the bourgeoisie of having "rescued a considerable part of the population from the idiocy of rural life". To be perfectly honest, I see environmentalism as a deeply reactionary movement, more akin to the feelings of Pat Buchanan's pitchfork-wielding townfolks than to the ones of industrial workers (not to mention thirld-world ones). Indeed, the very existence of attempts to build common ground between "red" and "green" never ceases to amaze me.
Enzo