The main theme of the June issue of National Geographic is about Greenland - the largest island of the earth covered with ice.
One of the articles of the magazine is devoted to the melting of the glaciers of the island. Photographer James Balog organized a survey of ice in Greenland and other large glaciers of the planet (EIS - Extreme Ice Survey) in 2006.
James and his colleagues established 35 special cameras that are powered by sunlight, protected of moisture, have a wind shield and make shots on a periodic basis. In one year, a single camera makes from 4000 to 12000 shots. Thus, it makes the cameras some sort of artificial eyes, which allows monitoring the evolution of the ice.
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Very pretty.