Conventional Wisdom: The Lorax's lesson

Lorax fever is starting to spread. Before signing the petition to include environmentalist education on the movie website, I thought about this article from 2009. Even though the Lorax is one of my all time favorite Dr. S books, I appreciate Glaeser's point--very Gladwellian:

Contrary to the story’s implied message, living in cities is green, while living surrounded by forests is brown. By building taller and taller buildings, the Once-ler was proving himself to be the real environmentalist.