Macon: Due to global warming, the Southeast is likely to see twice as many days a year with temperatures hitting the 90 degree mark or hotter, according to a federal report released last month. The report also predicts that the hottest days will be more than 10 degrees hotter. The report by the U.S. Global Change Research Program synthesizes the results of research assembled by 13 federal departments and agencies including NASA, the departments of defense and energy, the Environmental …