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A NASA spacecraft captured the clearest recording yet of what space sounds like inside Earth's radiation belts. Craig Kletzing, a professor of physics and astronomy at the University of Iowa, explains what causes these eerie chirping noises, and what we can learn from them.

On Matane Malit, the singer and her group offers a transfixing balance of old and new, laying expansive instrumentation over traditional Albanian folk melodies.

To millions of his fans, Lance Armstrong wasn't just a sports hero. He was an example of human resiliency who went from fighting testicular cancer to breaking cycling records at the Tour de France. His story was perhaps most meaningful to those with cancer. Following scathing accusations from the U.S. anti-doping agency and Armstrong's resignation from the chairmanship of his cancer foundation, Livestrong, two of those cancer survivors share their thoughts.

A feud is under way between two Wisconsin towns over which of them grilled the biggest bratwurst.

In Colorado, the presidential race is a statistical dead heat. The state went heavily for candidate Barack Obama in 2008 — but the president is now facing fierce headwinds. The race is starting to look more like what's happening nationwide — a struggle to bring out the party base.

For the first time in nearly a generation, Arizona voters will elect a new senator. Retiring Sen. Jon Kyl's ideological successor is Rep. Jeff Flake, a fellow Republican. But recent polls suggest Democrat Richard Carmona has a shot, and the race has become heated.

The singer helped upend the sound of R&B in the 1990s, when she was just a teenager. She also made a powerful and inspiring friend in Whitney Houston.

The Center for Responsive Politics says that 942 superPACs have raised more than $403 million during this election season. A beguiling pitch aimed at people eager to contribute to a political campaign can also have some of the makings of a classic con.

More questions for the panel: Aging Gracefully, What Will the Dog Eat Now, Smellular Phones, and Turn It Down.

Twitter agreed to remove a flood of racist and anti-Semitic tweets on its service in France, following threats of a lawsuit by a Jewish student group. The move is part of a larger balancing act to comply with local hate-speech laws while avoiding over-policing its content.