Global Warming on Thin Ice

1
Frozen areas of the planet, like the Mendenhall Glacier in Alaska, are warming at twice the global average. (James Balog/Extreme Ice Survey)

2
Black carbon or soot in the atmosphere accelerates ice melt on Columbia Glacier, Alaska, as documented by the Extreme Ice Survey time lapse cameras. (James Balog/Extreme Ice Survey)

3
Aerial view of melt water on Greenland Ice Sheet, which has experienced significant loss in recent years, and is likely to contribute significantly to sea level rise. (James Balog/Extreme Ice Survey)

4
On Greenland’s ice sheet, silt and soot blown from afar absorb solar heat and melt down into the ice. (James Balog/Extreme Ice Survey)