I’ve started a wiki article on the Objectivism Wiki to serve as a resource on environmentalism. Here is the introduction:

Philosophically, the essential principle of the ideology of environmentalism is the belief that “nature” has inherent moral value, and therefore the influence of man, and especially that of industrial civilization, is evil. Politically, this means the advocacy of various limits on industrial civilization, since all productive human activity has some kind of byproduct. While few (but alarmingly many) advocates of environmentalism recognize it as such, the ultimate goal of the environmentalist movement is the total destruction of industrial civilization, and the vast majority of the human race whose existence is made possible by it.

Please contribute!