Report from fmr. NYC Mayor Bloomberg, fmr. Sec. of Treasury Paulson & Tom Steyer: U.S. to face multibillion-dollar bill from climate change
Called "Risky Business," the report projects climate impacts at scales as small as individual counties. Its conclusions about crop losses and other consequences are based not on computer projections, which climate-change skeptics routinely attack, but on data from past heat waves. It paints a grim picture of economic loss.