Conclave begins, May 7 -- The heavy doors of the Sistine Chapel swung shut on Wednesday, May 7, as cardinals entered in pairs to elect the next Pope. Cries of "Extra omnes" - Latin for "all out," filled the air, setting Vatican's secretive process into motion.

The beginning of the Conclave marks the start of one of the Catholic Church's oldest and most secretive traditions. Inside the Sistine Chapel, 133 red-robed cardinals began the sacred task of choosing the next leader of the 1.4 billion-member Church, in what is now the most globally diverse conclave in its 2,000-year history.

The Conclave comes nearly two weeks after the death of Pope Francis - who passed away on April 21 - just a day after Easter.

The cardinals entered the chape...