Cardinal Raymond Burke explains why he hopes October's synod of bishops will close the debate over Cardinal Walter Kasper's proposal to make it easier for divorced and civilly remarried Catholics to receive Communion.
A Jesuit brother and president of the Vatican Observatory Foundation discusses the idea of extraterrestrials and how it might affect how humanity sees itself.
Inaugurating a worldwide online network for young people of all faiths and cultures, Pope Francis answered questions from participants around the world.