All Things Considered Every weekday, All Things Considered hosts Ailsa Chang, Audie Cornish, Mary Louise Kelly and Ari Shapiro present the program's trademark mix of news, interviews, commentaries, reviews, and offbeat features. Michel Martin hosts on the weekends.

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All Things Considered for February 20, 2011

Jeopardy contestants Ken Jennings (left), Brad Rutter and a computer named Watson. Carol Kaelson/AP hide caption

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Carol Kaelson/AP

The Dark Side of Watson

The Dark Side of Watson

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Scientists from NASA's Kepler mission discovered 54 planets in so-called "habitable zones" in the Milky Way. The SETI Institute turned its telescopes toward those planets to listen. AP hide caption

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AP

Tuning In Space Noise For Sounds Of Life

Tuning In Space Noise For Sounds Of Life

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All Things Considered for February 19, 2011

Some 16,000 years ago, people may have been curling up next to the fire with red foxes. iStockphoto.com hide caption

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iStockphoto.com

Man's First Best Friend Might Have Been A Fox

Man's First Best Friend Might Have Been A Fox

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The score for the Coen brothers' True Grit was written by the pair's longtime collaborator, Carter Burwell. Lorey Sebastian hide caption

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Lorey Sebastian

'True Grit': A New Score From Old, Familiar Tunes

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All Things Considered