Pope Francis Arrives in Brazil

First official oversees trip since becoming pontiff

Pope Francis arrived in Brazil on Monday, returning to his native South America on his first official trip since he became pontiff in March and started shaking up the Catholic church with his more personal, humble style.

The pope waved as he descended the stairs from his plane and was formally received by Brazilian President Dilma Rousseff.

Thousands of young pilgrims in multicolored T-shirts had gathered hours earlier in downtown Rio, which closed off its streets in anticipation of the Argentine-born pope's arrival for World Youth Day, an annual get-together of Catholic young people.