Jeff Bercovici sadly begins his report, at Conde Nast’s "Portfolio.com" this way:As global warming was first becoming a cause célèbre a few years ago, many serious environmentalists worried that green was in danger of becoming a fad — something that would inevitably recede from consciousness after overtaxing our limited pop-cultural attention span.Limited pop-cultural attention span? How about the adults finally took notice after the zealots had found a way to convince the...