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Thousands of years ago, ancient farmers gained the ability to consume milk as adults without getting an upset stomach. A remarkable mutation let some of them digest lactose sugar. But scientists still puzzle over why that mutation persisted and became prevalent in modern humans.

The drought gripping the nation's midsection has made the river very hard to navigate from St. Louis to Cairo, Ill., where it meets the Ohio River. By next week, barge traffic may have to halt altogether in that section, trade groups warn.

A federal mediator says the International Longshoremen's Association and port operators have agreed in principle on key issues and will extend their negotiations by 30 days.

Quentin Tarantino's new film Django Unchained has sparked controversy about his portrayal of slavery. Also, a dispute continues over whether gun owners' names and addresses should be made public. And, what are the most under-reported stories of 2012? The Barbershop guys weigh in with host Michel Martin for the last time this year.

Due to technical difficulties, we are not able to provide the audio from Friday's Special Olympics/Polar Plunge interview on Sounds Good. We apologize for…

Kentucky House Speaker Greg Stumbo is joining calls for a nation debate about gun issues in the wake of the Newtown, Conn., elementary school shootings,…

Kentucky's liquor laws have been in a legal limbo for months. And progress on reforming them has been slow. In 2012, a federal judge struck down the law…

Mark Zandi of Moody's Analytics predicts a last-minute deal on the "fiscal cliff" might be an early drag on next year's economy, but by year's end, the economy will be gaining momentum. If there's no deal? "I don't even want to think about it," he says.

This New Year's Eve, victims of Superstorm Sandy will likely be in Times Square to watch the ball drop. But they may not be there by choice. Their homes were ruined by the storm in October, and the Federal Emergency Management Agency has placed thousands in hotels in the area.

"If it's not me, who's it going to be?" asks Colorado school cafeteria manager Kathy Del Tonto. After serving processed foods in her cafeterias for years, she realized that reducing childhood obesity can begin with her. She now has the lunch ladies making 95 percent of meals from scratch.