Pope Francis focuses on poor and environment at inauguration Mass

Amid elaborate ritual and ancient symbols of Christendom, Pope Francis began the first official day of his pontificate Tuesday by setting out a vision for the Roman Catholic Church of mutual caring and of concern for the environment, urging followers to pay special attention to society's poor and neglected.

Bishop Jaime Soto, along with the deans of the Diocese of Sacramento, celebrate a special Mass for the newly-elected Pope Francis in Sacramento, Calif. on Tuesday, March 19, 2013.

Pope Francis waves during his inauguration Mass Tuesday at the Vatican. He made clear his papacy would reflect the themes of service and love of nature identified with the saint after whom he named himself, Francis of Assisi.