CBC: A Yukon glacier is slowly advancing towards an Alaskan river, setting the stage for an awesome collision of natural forces. If the glacier that originates near Mount Logan in the Yukon continues advancing at its current rate, it could block access to a fiord in Alaska and "strongly impact" the nearby ecosystem. New research from the University of Kansas suggests the Hubbard Glacier could permanently dam the entrance to Russell Fiord, on the Gulf of Alaska, within 25 years. The timeline is the...