Looking Back to Look Forward: The Environment SEATTLE (KPLU) - Over the past century, we've swung between periods where the government used a strong hand to address environmental problems and other periods where we've preferred to let market forces have more sway. Since the 1980s, that market-oriented approach has pretty much dominated. In this installment of KPLU's election series Looking Back to Look Forward, Liam Moriarty looks at whether, during this presidential election, a new sense of urgency about global warming could swing the pendulum the other way. © Copyright 2009, KPLU