CQPolitics.com: Former Vice President Al Gore is not the only ex-politician who believes climate change is this generation’s chance to change the future. In fact, a persistent group of former members — who no longer have to worry about re-election and are free to work on issues they truly care about — are hard at work, both in the United States and in Copenhagen, trying to find a solution for climate change. They are tackling the subject much the same way they focused on it when they served …