According to a recent report by the US Geological Survey ninety-nine percent of Alaska's glaciers are either retreating or diminishing This diminishing seems mainly due to the increase in global temperatures. Since the 1960s, the average year-round temperature has increased by almost 3°C. Additionally, the average winter temperature has increased By over 6°C Presently, an estimated 100 cubic kilometers of ice is disappearing from alaska glaciers every year. it may be even more in the near future as some scientists predict that the average world temperature could go up 4 to 7°c by the year 2100.