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AAA has warned against potential damage that a new blend of gasoline could do to some engines. And the warning has started a fight over renewable fuels and the future of what we put in our gas tanks.

The fuel is called E15 — named for the percentage of ethanol in the blend. Most of the gas that's sold in the U.S. has about 10 percent ethanol in it.

There's not much in health care that economists agree on. But one of the few things that bring them together is the idea that excluding the value of health insurance from federal taxes is nuts.

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MELISSA BLOCK, HOST:

North Dakota has the lowest unemployment rate in the country, fueled by a booming oil economy. In fact, it's been so hard to find workers in Minot, North Dakota, in the north central part of the state, that one big box store is flying them in from Wisconsin. Dan Feldner of the Minot Daily News joins me to talk about it. And Dan, we're talking about the home improvement retailer Menards. The headquarters is in Au Claire, Wisconsin.

How many workers are they going to be flying in?

Two years and $8.4 billion into the government's effort to get doctors to take their practices digital, some unintended consequences are starting to emerge.

One is a lot of unhappy doctors. In a big survey by Medscape, an online site for doctors, 38 percent of the doctors polled said they were unhappy with their electronic medical records system.

Jeffrey Hillman's bare feet on a frigid night in New York City last month inspired a police officer to buy the seemingly homeless man a pair of warm boots — a moment captured in a heartwarming photo that went viral.

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MICHEL MARTIN, HOST:

I'm Michel Martin and this is TELL ME MORE from NPR News. Later in the program we are going to head to Central Africa to find out what's happening in the Democratic Republic of Congo, where an armed rebel group managed to take over one of the country's most important cities, despite the presence of a massive United Nations peacekeeping force. We'll talk about how that happened and why it matters with a reporter who is there on the ground. That's coming up later in the program.

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MICHEL MARTIN, HOST:

I'm Michel Martin and this is TELL ME MORE from NPR News. They say it takes a village to raise a child, but maybe you just need a few moms in your corner and generally at this time, we check in with a group of parents who share their experiences and common sense advice.

Your crime fodder ... sorry, make that blotter ... news of the day.

From St. Louis:

A campaign to raise awareness about the struggles of low-income Americans who depend on food stamps gets a high-profile plug today as Mayor Cory Booker of Newark, N.J., begins a week of living on $30 worth of food.