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Some dogs need to be on specialized diets for health reasons, but most eat just about anything. That wasn't always the case, however. The domestic dog's ancestor, the wolf, ate only meat. Research suggests for dogs to live with humans, they had to adapt to a starchy diet.

The Pentagon is expected to officially announce Thursday that it will lift the military ban on women in combat. The defense chief's groundbreaking move opens up thousands of front-line positions for women. For more on the Pentagon's decision Steve Inskeep talks to NPR's Tom Bowman. And from Kentucky, Blake Farmer of member station WPLN has reaction from Fort Campbell.

VIDEO: See the secretary of state's sharp words for Sen. Ron Johnson, R-Wis., after he accuses the Obama administration of misleading the nation about who was behind last September's attack on the U.S. mission in Benghazi, Libya.

As flood waters rose, a crocodile farmer was forced to open his gates. The crocodiles grabbed the chance to make a break. More than half remain at large. Hunters are having the most success capturing them at night, when their eyes sign red.

Multitaskers tend to test high for traits like risk-taking, sensation-seeking and impulsivity. And those very traits interfere with people's ability to stay focused, researchers say.

The military's lift of the combat ban for women potentially opens up thousands of front-line positions, but many women in uniform argue they've long served in front-line units. Host Neal Conan talks to Lt. Col. Samantha Nerove about what the change may mean and her experiences in the military.

President Obama's choice to head the Securities and Exchange Commission has prosecuted terrorists and mobsters. If she's confirmed, Mary Jo White's next challenge will be tackling reckless behavior on Wall Street. The success of this get-tough push will depend on changing the SEC's culture, analysts say.

President Obama offered a more full-throated defense of government in his inaugural address than has been heard from a major politician in a generation. Obama may be seeking to shift debate from defending programs to praising the value of government as a whole.

While Chicago and Detroit are struggling to control rising murder rates, New York City hit a record low number of homicides in 2012. The police commissioner has often pointed to several controversial policing tactics for falling crime, but some analysts say there are many potential explanations.

Twitter launches Vine, a video-sharing app that allows users to post succinct videos directly onto tweets. The app is reminiscent of Instagram and seems familiar at a time when animated GIFs are all the rage.