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Looking to stem the recent wave of "green on blue" attacks in which men wearing police or military uniforms have killed more than 30 U.S. or other international forces, Afghan officials said today that they have "arrested or discharged hundreds of their country's soldiers," NPR's Soraya Sarhaddi Nelson reports from Kabul.

President Barack Obama will not be in a stadium full of supporters on Thursday when he delivers his acceptance speech.

The Democratic National Convention said that because of the threat of thunderstorms, it was moving the events of Thursday from Bank of America Stadium to the Time Warner Cable Arena, the host of the first two days of events.

To watch the entire session, visit KCRW.com.

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If you're too young to remember the 1980s, you'll have to take my word for it: We thought we were pretty cool. New Coke, pink Izods, hair metal and The A-Team. We really turned pop culture on its head! (We didn't turn pop culture on its head.)

Of all the trends that seemed fantastically modern back then, few things said "the '80s" more than aerobics and the requisite leg warmers and unitards. The San Francisco band Moon Duo revives this exercise phenomenon — and everything that now seems ludicrous about it — in a new video for its song "Sleepwalker."

An estimated 14.9 percent of U.S. households — 17.9 million in total — "had difficulty" at some point last year getting food because they just didn't have enough money or other resources, the U.S. Department of Agriculture reported this morning.

In 2010, 14.5 percent of households were similarly "food insecure" at some point, USDA says.

Even worse: