Migrating to another country in pursuit of safety and a better life has long been a way of coping with crisis. But for some, the quest can be torturous and seemingly without end. For more than four years, we followed the story of one young Afghan migrant whose long journey has spanned continents--and shattered most of his dreams...The world produces constant noise. But one man is on the lookout, listening for a very particular kind of noise. One that may save lives. We travel to Northern Greeland to see how he's using high technology in one of the most remote corners of the world.