How this nomadic music group is bridging cultural divides

Tinariwen’s members are Tuaregs, an ethnic group from all across the Sahara desert. They’re nomads who lay down musical rather than physical roots, and their music follows a rich Tuareg lyrical tradition -- gone electric. But although the Tinariwen feel at home wherever they are on stage, some of the communities in which they perform extend hostility rather than hospitality. Ali Rogin reports.