The six-day course will see talks from experts on varying subjects on the "existential surroundings of demons".
Some at St. Peter's Square say the Pope may have been sending a message to Donald Trump and other world leaders who have been using the phrase "fake news."
Francis, who has often warned about the effects that climate change has on the poor,
The pontiff's hard-hitting speech may have made uncomfortable listening for his host, President Pedro Pablo Kuczynski
Francis decried the "pressure being exerted by big business interests" seeking petroleum, gas, lumber, and gold
It wasn't all marriages on airplanes. The Pope has caused outrage on his visit to Chile by refusing to condemn Bishop Juan Barros, who stands accused of a cover-up.
Pedro Pablo Kuczynski urged Francis to help bring the country together after a political crisis.
The mid-air ceremony was the first in papal history.
Pope's visit to Chile causes protests.
Pope Francis has called on all nations to support dialogue to ease tensions on the Korean peninsula and to work for a legally-binding ban on nuclear weapons.
"Don't be afraid, feed them, because this too is the language of love," said the Pope.
Pope Francis offered his reflections on 2018 as he celebrated New Year's Day Mass in St. Peter's Basilica and later greeted some 40,000 people in St. Peter's Square.
Pope Francis in his year-end message said 2017 had been marred by "war and lies"
Pope Francis urged hospitality towards migrants and refugees in his Christmas Midnight Mass
Law became a central figure in the worst crisis to hit the Roman Catholic Church in America - the alleged cover-up by church officials of sexual abuse of children by priests.
Pope Francis staunchly defended the rights of ethnic minorities in a speech during his first mass in Myanmar.
Pope Francis failed to mention Myanmar’s Muslim Rohingya minority as he stood on stage with the country’s civilian leader, Aung San Suu Kyi.
It's definitely a step up from the pope-mobile, but the pontiff won't be using his gift of a Lamborghini on the tree-shaded roads of the Vatican gardens.
Cross on monument to Pope John Paul II ruled to break French law on separation of Church and State
The pontiff took part in a 20-minute video call with the crew of the ISS