Official energy forecasts suggest that we'll still have a predominantly fossil fueled economy for decades to come. But official energy forecasts assume that past performance dictates future results. The world doesn’t always work that. ay. We've managed to solve intractable problems like filthy rivers and smoggy air and acid rain. There's just as plausible a case for optimism about the carbon problem in part because we're screwed if we don't solve it. The human race does a lot of stupid things, but we've got a powerful incentive to save the only planet that has pizza and Yosemite an our children. The are of the logical universe is long and, hopefully, ends toward common sense.