Faithful gather in St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Pope Francis has urged princes, presidents, sheikhs and thousands of ordinary people gathered for his installation Mass ... more 
Faithful gather in St. Peter's Square at the Vatican, Tuesday, March 19, 2013. Pope Francis has urged princes, presidents, sheikhs and thousands of ordinary people gathered for his installation Mass to protect God's creation, the weakest and the poorest of the world. (AP Photo/Dmitry Lovetsky) less 
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Associated Press | Photo By Dmitry Lovetsky
Tue, Mar 19, 2013 8:27 AM EDT