IPCC Global Warming Projections (as of 2/2007)
Climate model estimates of twenty-first century global warming are still fuzzy to a factor of three--plus the uncertainty about what policies will be, and what the effects of policies on emissions will be. But they are a lot less fuzzy than they were a decade ago.
The prospect of a world that is five degrees warmer in a century is unsettling. More unsettling is what happens after 2100.
