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Watch a slideshow by R & E senior associate producer Patti Jette Hanley of Pope Benedict XVI celebrating Mass in front of 46,000 Catholics at Nationals Park in Washington. GO

If you could spend time with gorillas in their verdant mountainside habitat, you might be surprised to find that their family dynamics, political maneuvers, and personal quirks are quite complex–in some ways, almost “human.” Discover the intricacies of a gorilla family’s daily life at Nature online.

I’ll be the first to admit it: I’m cheap. So my initial reaction to the Metropolitan Opera’s 2006 program offering same-day tickets for certain performances was: Finally, someone in opera heaven is listening.

This week Reel 13 drew an eclectic mix of short films. First, “Twitch” tells the story of a young girl torn between two worlds; “10 Short Documentaries About My Childhood Home” explores the possibilities of genre; and “Anne’s Hoard” chronicles the life of a woman who collects things that others have long discarded.

Pope Benedict XVI visited the White House yesterday, welcomed by President and Mrs. Bush, after apologizing for child abuse scandals in the U.S. Catholic Church in recent years. A NewsHour reporter following the story discusses the pope’s six-day, two-city visit.

Watch this narrated slideshow as carpenter–and Catholic deacon–Dave Cahoon constructs the altar furniture for Thursday’s Papal Mass at Yankee Stadium.

Harlem is the capital of black American culture and 125th Street is its Main Street. But this historic corridor may be in for big changes: the City Council is considering a rezoning plan that would bring new office space, housing, and arts organizations to Harlem, while displacing many existing retail stores.

Democratic Presidential candidates Hillary Clinton and Barack Obama went head to head last night in what could be their last debate before the decisive Presidential primary in Pennsylvania. Follow the NewsHour as they travel to Pennsylvania ahead of the state’s April 22 primary to explore voter viewpoints on the election.

Parents have a new reason to plant their kids on a piano bench after school. A new study conducted by researchers at Harvard Medical School indicates that children who diligently practice music can strengthen connections between the two hemispheres of their brains.