"As a theology, environmentalism speaks deeply to America’s elites. Its moral absolutes affirm them, adding meaning to their otherwise secular world. The collapse of mainline Protestantism left a void in the hearts of America’s ruling class. The environmental movement fills it. Seen this way, the movement’s new priorities make sense. Environmentalism as a religion is more compelling than environmentalism as a means to save birds or clean up some river in Maine. After a while, details about the natural world begin to seem irrelevant. Compared to questions of virtue and salvation, they’re not that interesting."