Nature: An 80% reduction in carbon dioxide emissions (green line, top graph) would be needed to stabilize atmospheric concentrations of the gas (green line, bottom graph). Click for a larger version.Ref. 1 As the US Senate gears up to debate the latest incarnation of proposed climate legislation next week, a blue-ribbon panel has released what it hopes will be a definitive guide to the consequences of climate change for lawmakers and the public. In offering a degree-by-degree breakdown of the …