Imagine, you live in Boston, but you are a die-hard Yankees fan. You simply hate the Red Sox, and so you have no choice but to go to the other side. Thirty years later, however, the Yankees have hit a slump, so just to make things easier for you and everyone else, you start calling yourself a Red Sox fan. You are still a Yankees fan at heart, but being a Red Sox fan just sounds better and is easier for you and everyone else to stomach. It sounds absurd, right? But raise the stakes a little bit, and that is where the environmental movement finds itself today.