Pope Francis' First Day on the Job

The Church of Rome looked to the New World to find Pope Francis, former Archbishop of Buenos Aires. We hear about his past life in Argentina, his theological leanings and the challenges he faces in Rome. Also, troops are on security alert after Afghan President Karzai's anti-US statements, and NASA is turning Los Angeles into a giant laboratory — for measuring climate change, just the way forecasters measure the weather.

Banner image: Newly elected Pope Francis, Cardinal Jorge Mario Bergoglio of Argentina waves from the steps of the Santa Maria Maggiore Basilica in Rome, March 14, 2013. At left is Cardinal Santos Abril of Spain and Cardinal Agostino Vallini, Vicar General of Rome at right. Photo by Alessandro Bianchi/Reuters