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Comets are known as the icy bodies of the solar system. But new analysis of dust brought back by a space probe shows comets are also made up of minerals forged by fire.

A Hawaiian firm has become one of the first to launch deep-sea fish farms. In waters some 200 feet deep, Kona Blue is raising fish in giant netted cages. The company says this type of large-scale, open-ocean aquaculture may be the answer to the world's over-fishing woes.

If you come from a poor family, you are more likely to drop out of high school. And if you drop out and stay out of high school, you are more likely to be poor. In Portland, Ore., one program is designed to break this cycle by helping dropouts finish their education.

Tammy Duckworth, a former Army helicopter pilot who lost both legs in a 2004 attack in Iraq, is running for the Illinois House seat occupied by retiring GOP Rep. Henry Hyde. Duckworth comes from a long line of veterans with serious war injuries who wind up in politics.

The political left needs a hero, and Upton Sinclair just keeps getting resurrected for the job in Chris Bachelder's bizarre and hilarious novel U.S.!. Bachelder talks about his second novel with Susan Stamberg.

The Bush administration unveils an updated version of its National Security Strategy, a document originally issued in 2002 to lay out the White House vision for the war on terrorism. The new version restates the doctrine of pre-emptive war and says Iran may pose an increased threat to the United States.

If you're a music fan, the place to be this week is Austin, Texas. The annual South by Southwest Music Conference and Festival is in full swing. Music critic Stephen Thompson shares tracks from some of his favorite artists performing at the festival.

If you think scientists never do anything useful, consider this: A team of researchers may have found a way to make bacon that's good for your heart. This stunning achievement comes from a mixture of molecular genetics, cloning, and good old American know-how.

Commentator Rod Dreher says conservatives could find inspiration from fellow Republicans who embrace a counter-cultural yet traditional conservative lifestyle — what he dubs "Crunchy Cons."

Like Sundance, it turns 25 this year and promotes independent films. But that's where the similarities end for the Black Maria Film & Video Festival, which takes short, often experimental films on the road across America.