All Things Considered
Jeopardy contestants Ken Jennings (left), Brad Rutter and a computer named Watson. Carol Kaelson/AP hide caption
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
Official White House portrait of Andrew Jackson. Wikimedia Commons hide caption
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