Cristian Barnett photographs life along the Arctic Circle in his book, Life on the Line.

London-based photographer Cristian Barnett was looking at a map of the world when an idea for a project—a pretty crazy one at that—came to him in a flash. He would, he decided, photograph life along the Arctic Circle, a circle of latitude at 66 degrees and 33 minutes north of the equator that crosses the borders of eight countries. Since 2006, he visited the region 11 times and photographed in all the countries on the line for his book, Life on the Line, which was published in September by Polarworld.