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What are the benefits of living in a multicultural society? Why is it important that different age, ethnic, and cultural groups are recognized and valued in their community? How do our community bon

The month of ethnic bloodletting in Kenya has historic roots. Grievances over land and privilege date back decades. And the dispute over last month's presidential election has aggravated those tensions in deadly ways.

The Department of Agriculture confirms that a cow in Alabama was infected with mad cow disease. It's the third case of mad cow disease detected in this country. Agriculture officials say the animal's carcass was buried and was not used for animal or human food.

Imperial County sprawls across deserts, date groves and labor camps from Julian to Arizona and from Riverside County to the border. William Vollman has written a 1,300-page portrait of this immense hot and dry land, the people who pioneered it and the people who live and work there today.

By studying huge cosmic explosions called gamma-ray bursts, an astronomer finds an important clue to one of the most profound mysteries of the universe: why is it's expansion speeding up?

The opening of the new airport in the Iraqi city of Najaf highlights plans to turn this holy city into the "Baghdad of the south" for Shiites. What does the economic boom mean for a country that is trying not to split up along ethnic and religious lines?

Hundreds of pages of documents, search warrants and other court records show that the late Bruce Ivins was deeply troubled, but the evidence is largely circumstantial. Officials said Ivins was the "custodian" of a specific anthrax strain that was used in the 2001 attacks that killed five people.

Scientists at the Scripps Research Institute in La Jolla may have developed the first-ever vaccine to curb weight gain. Researchers released their findings today. KPBS Reporter Ana Tintocalis has more

Building New Audiences with Social Media

Mitt Romney and Rudy Giuliani have been sparring all week about who's tougher on taxes and spending. Independent observers say both men are pretty tough, even if their records are not quite as pure as their campaign boasts would suggest.