University of Maine agriculture professor Susan Erich, biology professor Emeritus George Jacobson, paleoecologist Jacquelyn Gill and Climate Change Institute data all were sources for a Bangor Daily News article on how climate change could impact Aroostook County. Hardiness zones, calculated by using the average lowest winter temperatures, have been moving north in recent decades. In read more BDN cites UMaine experts in article on climate change in The County