50th anniversary: The document raised the profile of the church's concern for people in the global south at a time when European colonialism was declining.
Distinctly Catholic: Cardinal Sean O'Malley spoke about three forces at work in American social and political life, in a talk given Jan. 10 at The Catholic University of America.
Read the full text of U.S. presidential hopeful Bernie Sanders' speech at the Vatican.
Faith and Justice: The encyclical is great for individual reading but even better for a book club, class, or discussion group. Here's a readers' guide to Laudato Si'.
Faith and Justice: Pope Francis is the first pope in history to have a scientific education. He has more scientific training than most of his critics.
Faith and Justice: Conservationists hope that the encyclical's attitude toward animals, especially wildlife, will reflect the spirit of St. Francis of Assisi.
Grace on the Margins: The encyclical will give prominence to the "moral dimensions of environmental degradation" beyond the usual focus on science, technology and economics.
Eco Catholic: Pope Francis feels a responsibility to remind Christians of their obligation to safeguard creation, beginning with humans who are created in the likeness of God.
By listening to people's suffering, joys and daily endeavors, Catholics bring the vision of the Second Vatican Council to the world, Cardinal Luis Antonio Tagle of Manila, Philippines, told an audience at The Catholic University of America.
Making a Difference: "War never again. It is peace, peace which must guide the destinies of peoples and of all mankind."