A Salon article on the area of "ecological economics" which tries to measure ecological impact in purely economic terms (and therefore tries to make more obvious what impact environmental changes have in the economy). I have my doubts about some of the analysis they mention (I am skeptical of anything that puts a certain value in, for example, "weather patterns") but as a counterpoint to the idiotic view that "it can't be measured at all, and therefore it doesn't matter" it's certainly interesting.