One third of Americans say global warming ranks as the world's single largest environmental problem according to a new survey conducted by the Washington Post, ABC News and Stanford University. That's double the number who considered it of most import last year. Seven out of 10 of those surveyed want the federal government to do more to combat climate change and "by a 40-point margin, the public trusts congressional Democrats more than it trusts President Bush to handle global warming," writes the WPost. Climate change might yet become a key election issue then. Al Gore, are you listening?