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ILULISSAT, GREENLAND - JULY 17:  Icebergs float in the water on July 17, 2013 in Ilulissat, Greenland. As Greenlanders adapt to the changing climate and go on with their lives, researchers from the National Science Foundation and other organizations are studying the phenomena of the melting glaciers and its long-term ramifications for the rest of the world. In recent years, sea level rise in places such as Miami Beach has led to increased street flooding and prompted leaders such as New York City Mayor Michael Bloomberg to propose a $19.5 billion plan to boost the citys capacity to withstand future extreme weather events by, among other things, devising mechanisms to withstand flooding.  (Photo by Joe Raedle/Getty Images)
ILULISSAT, GREENLAND - JULY 17:  Icebergs float in the water on July 17, 2013 in Ilulissat, Greenland. As Greenlanders adapt to the changing climate and go on with their lives, researchers from the National Science Foundation and other organizations are studying the phenomena of the melting glaciers and its long-term ramifications for the rest of the world. In recent years, sea level rise in places such as Miami Beach has led to increased street flooding and prompted leaders such as New York City Mayor Michael Bloomberg to propose a $19.5 billion plan to boost the citys capacity to withstand future extreme weather events by, among other things, devising mechanisms to withstand flooding.  (Photo by Joe Raedle/Getty Images)

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A world melting away

With ice levels in Antarctica at a record low and temperatures in the North Pole raising alarm bells, Christiane Amanpour reports on a world melting away.

A world melting away

With ice levels in Antarctica at a record low and temperatures in the North Pole raising alarm bells, Christiane Amanpour reports on a world melting away.