Times: Environmentalists are great at visualizing catastrophe — just see An Inconvenient Truth — but even the most doom-filled green would have had a difficult time imagining the past 12 months. From the debacle of the hacked Climategate e-mails to the bitter disappointment of Copenhagen to the slow death of carbon cap and trade in the Senate, the past year has mostly been one of reversals for the U.S. environmental movement. The midterm elections aren’t looking any better. Tea Party-backed candidates…