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After addressing a joint meeting of Congress and lunching with some 300 low-income and homeless people at Catholic Charities, the pontiff left for New York, the next stop on his U.S. tour.

Calling them "four representatives of the American people," Pope Francis lauded Dorothy Day and Thomas Merton alongside Martin Luther King Jr. and Abraham Lincoln.

President Obama has had limited contact with President Vladimir Putin since Russia's annexation of Crimea last year.

In a nearly hourlong speech, Pope Francis called for action on climate change, encouraged empathy for immigrants and advocated for the poor. He also said he supports abolishing the death penalty.

The new report found that a BMW X3 produced more than 11 times the amount of nitrous oxides pollution allowed under Europe's standards.

The stampede is being called the worst in 25 years. It occurred on a street in Mina, a large valley where thousands of pilgrims camp overnight.

Secretary of State John Kerry praised the progress in peace talks in Cuba between President Juan Manuel Santos and the leader of the Revolutionary Armed Forces of Colombia (FARC), known as Timochenko.

Researchers in the Middle East have requested the first-ever withdrawal from the "final backup" seed bank because of destruction caused by the Syrian civil war.

During the Mass celebrated at Basilica of the National Shrine of the Immaculate Conception in Washington, D.C., Junipero Serra became the first saint canonized on U.S. soil.

Hackers were able to steal the prints of some 5.6 million people — up from the original estimate of 1.1 million. The new number comes as Chinese President Xi Jinping visits the U.S.