Greenland's Melting Glaciers

Konrad Steffen is an expert on the melting of glaciers and ice sheets as global climate evolves.  As these enormous bodies of ice change to water over centuries, they contribute to rising sea levels and changes in salinity across the oceans. Steffen captured this photo of an ice berg in the IIulissat Icefjord in Greenland in April of 2005.

Credit: Konrad Steffen, CIRES/University of Colorado at Boulder