ClimateWire: Robert Rubin, a former U.S. Treasury secretary in the Clinton administration, said yesterday that climate change is particularly pernicious because it affects so many distinct economic sectors, from budgetary planning and labor relations to agriculture production. "I believe, as all of you do, that climate change is the existential threat of our time," Rubin said, addressing the Climate Leadership Conference in Arlington, Va. "The scientific community has long been unanimous." Yet on Capitol Hill,...