Because of the global warming glaciers in Alaska are melting faster and faster. Perhaps, in a few decades, there will be no ice at all. Glacier calving is a majestic and sad sight. In Alaska, you can take a cruise during the warmest months, when the temperature is rising, and watch it in real time. For best impressions, visit Glacier Bay, Hubbard Glacier, Sawyer Glacier in Tracy Arm Fjord, Mendenhall Glacier, or the glaciers of College Fjord.