Cardinal Christoph Schönborn also said open controversy is "absolutely essential" when discussing the future of the Catholic church.
Archbishop of Canterbury Justin Welby said strong disagreements on the ordination of women as bishops and full rights for LGBT people are threatening to tear the church apart.
Pope Francis did not travel to Vienna for two high-profile nuclear disarmament conferences, but his name was called out frequently during the events.
Eco Catholic: "There is no large-scale industrial mining without water. ... These toxic materials will remain in the soil and in the water [for] centuries."
Young Africans are being seduced into modern slavery by the promise of a dream that never comes true, an English cardinal told a conference on human trafficking.
Cardinal Vincent Nichols of Westminster said "there seems to be no enticement that isn't being used" by human traffickers to entrap children.
Some church leaders are criticizing a British musicians' charity group raising funds for the West African Ebola crisis, saying its new single reinforces negative stereotypes of Africa.
Band Aid, which was started 30 years ago by Bob Geldof, has re-recorded the charity title, "Do They Know It's Christmas?"
The song was first recorded in 1984 to raise money to help victims of the Ethiopia famine.
Pope Francis called on world leaders, activists and people of faith to pull together to rid the world of the threat of nuclear weapons.
Archbishop Silvano Tomasi, the Vatican's permanent representative to U.N. agencies in Geneva, read the pope's statement Monday in Vienna at the opening of Vienna Conference on the Humanitarian Impact of Nuclear Weapons.
In his message, Pope Francis restated the Vatican's long-standing advocacy for the global elimination of nuclear weapons and said peace is not just a balance of power, "but true justice."
Global Sisters Report: At a hospital in Luweero, Uganda, the children are sometimes discharged from the hospital with antibiotics and a female goat.
Catholic and other humanitarian agencies prepared for another potentially devastating storm in the central Philippines as Typhoon Hagupit continued to gain strength and approached the same region devastated 13 months ago.
Bullet holes pepper the front windows of the old city council office and paramilitary police in armored jeeps patrol the main street in this mixed Muslim and Druze village in the Galilee region.
Two weeks ago, more than 40 people were injured in a brawl between the two communities, most of them by a grenade thrown into a group of Muslim rioters.