You can bet he’s not thinking about a presidential campaign today. He’s savoring his sweet political vindication, though. He can’t help but remember when President George H.W. Bush called him “Ozone Man” in 1992 and the Republicans called him radical on the environment in 2000. Life is strange. Seven years ago this December, when his popular vote victory failed to land him in the White House, Al Gore seemed like one of history’s biggest losers. No more.