A photograph of a towering glacier calving dramatically into the turquoise waters of a glacial lake in Alaska. The massive ice wall exhibits...

A photograph of a towering glacier calving dramatically into the turquoise waters of a glacial lake in Alaska. The massive ice wall exhibits a brilliant blue hue streaked with black moraine, its jagged edge glistening under the sunlight. Icebergs of varying sizes drift serenely across the lake's surface, ...