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Tom Gjelten

The Southern Baptist Convention, the largest Protestant denomination in the country, wrapped up its annual meeting Wednesday on a partisan tone. The featured speaker was Vice President Pence, who spoke of the day he accepted Jesus Christ as his savior and of the importance of prayer, but mostly delivered a speech fit for a campaign rally.

Pope Francis arrives in Washington, D.C., this afternoon for his first trip to the U.S. Here's a look at some of the key moments to watch during the leader of the Roman Catholic Church's six-day visit.

Tuesday: The President Greets The Pope

The Church of Scientology is famous for its efforts to silence its critics, but it has not blocked an upcoming HBO film that turns a harsh light on the powerful organization and its leadership.

Going Clear: Scientology and the Prison of Belief, directed by Academy Award-winning documentarian Alex Gibney, will debut Sunday over the vigorous objection of Scientology officials.

As investigators look into the Boston Marathon bombings, one crucial question is whether the suspects, brothers Tamerlan and Dzhokhar Tsarnaev, acted alone or had help. The clues might be found in the bombs used.

From what is now known, it appears the brothers assembled a whole arsenal of explosives. Watertown Police Chief Edward Deveau told CNN last weekend that the suspects had at least six bombs, including the two used in the attack and one thrown at police during a shootout.