The Documentary: Archive 2014

Each year, thousands of Latin American migrants illegally cross the US border via a treacherous journey, walking for days across the Arizona desert. Some succeed, others are deported, while many drop dead from exhaustion. The BBC's Mexico Correspondent Will Grant travels to Tucson, Arizona, to meet the team behind The Missing Migrant Project, which works to identify the remains of the dead and, ultimately, return them to their family.