Cindy Wooden, Catholic News Service

Cindy Wooden, Catholic News Service

VATICAN CITY -- If you’ve ever wondered what’s behind the calendar chaos of Easter, look no further than the sun and the moon.

VATICAN CITY — Whether people admit it or not, climate change and environmental destruction are forcing millions from their homes, and Catholics have a responsibility to assist them, Pope Francis wrote in the preface to a new document.

VATICAN CITY -- Food, cooking fuel, jobs and, especially, hope are hard to come by in Syria, said two Catholic leaders reflecting on the 10th anniversary of the war.

VATICAN CITY -- The Vatican is putting an end to the practice of priests going into St. Peter's Basilica early every morning to celebrate their own Mass at a side altar with just an altar server.

ABOARD THE PAPAL FLIGHT FROM IRAQ -- The Catholic Church's commitment to dialogue with other churches and with other religions flows from the Gospel, but Pope Francis said he knows some Catholics disagree.

IRBIL, Iraq -- Having witnessed or even experienced persecution for their faith, the Christians of Iraq must be careful not to harbor thoughts of revenge, Pope Francis told them.

BAGHDAD -- Pope Francis told Iraqi Christians that when they suffer discrimination, persecution or war, the Eight Beatitudes are addressed to them.

QARAQOSH, Iraq -- Amid the rubble and bombed out remains of four churches destroyed by Islamic State militants, Pope Francis paid tribute to Iraqi Christians who endured persecution and even death.

UR, Iraq -- Traveling to the birthplace of Abraham, Pope Francis urged believers to prove their faith in the one God and father of all by accepting one another as brothers and sisters.

NASIRIYAH, Iraq -- In a low-key meeting followed closely in Iraq and beyond, Pope Francis and Ayatollah Ali al-Sistani, the influential leader of Shiite Muslims in Iraq, spent 45 minutes speaking privately.