The U.S. energy and transportation sectors are unprepared for the impacts of climate change they are helping stoke, according to a new federal report that warns of "longer and more frequent power interruptions." U.S. infrastructure is threatened by higher temperatures, stronger storms, increased flooding and longer, more intense droughts, according to the Fourth National Climate Assessment. While locational effects differ, "all regions will be affected by climate change," the authors conclude. The power sector climate assessment is based on modeling by the Rhodium Group, a Lab partner.