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Ninety percent of students at Hobgood Elementary in Murfreesboro, Tenn., come from low-income households. Most of the school's teachers don't. And that's a challenge, says principal Tammy Garrett.

"If you only know middle-class families, you may not understand at times why they don't have their homework or why they're tired," Garrett says.

People whose diabetes requires insulin injections usually have to make a series of visits to the doctor's office to fine-tune their daily dosage. But many low-income patients can't afford to take those few hours off to see the doctor. As a result, they often live with chronically elevated blood sugars for weeks or months until they can find time to get to the clinic.

Firewise is the name of a long-running campaign to get homeowners in wildfire country to take steps to reduce risk. Outside Omak, Wash., John Belles didn't just do the simple things. He built a futuristic, thin-shelled concrete dome house. It's now an unscathed beacon amid acres of hillside blackened by the Okanogan fire, the largest in state history.

Alek Skarlatos, a National Guardsman who was one of three Americans who helped foil a gunman's attack on a French passenger train Friday, will receive the Soldiers Medal, one of the U.S. Army's highest awards.

One day after the racing community was shocked by the death of driver Justin Wilson at age 37, news has emerged that Wilson, a well-known advocate for charities who often spoke about his dyslexia, donated his organs to others — and gave vital help to six people.

Wilson died Monday after suffering a head injury during a race at the Pocono Raceway in Long Pond, Pa., Sunday. He was struck by airborne debris from another car and then crashed into a wall on the track.

Five months after climbing a stone wall to enter the White House grounds, Curtis Smith used a knife to slash at a sheriff's deputy at an entrance to the Chester County, Pa., courthouse on Tuesday. The guard shot and killed Smith.

Here's part of a statement released by Chester County District Attorney Tom Hogan:

Evangelical voters are courted every presidential election by Republicans, especially in Iowa. But this year, they could have an even larger impact.

That's because a slew of Southern states are holding primaries on the same day in March of next year, just a month after Iowa votes. And one candidate is making a bold early effort to win them over — Texas Sen. Ted Cruz.

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There is a subset of puns - businesses that name themselves based on a pun. You know, the kind of thing you see on a storefront sign that makes you groan or maybe laugh, depending on your mood.

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JOE GONZALES: Park your car at Harvard Yard.

ROSS HENDERSON: I parked my car on Harvard Yard.

LINDA PAOLERA: Park your car in Harvard Yard.

PETER VALERIE: Park your car in Harvard Yard. They occasionally will say, you have an accent.

Stock prices took another beating Tuesday, with all major stock measures falling.

Two closely followed market indicators, the Dow Jones industrial average and the S&P 500, each fell roughly 1.3 percent, despite opening the day with big gains.

This huge summer sell-off must mean the U.S. economy is sinking, right?

Well, so far at least, that's not right. In fact, the economy has been improving, and Tuesday brought yet more evidence of that. Here are some highlights:

I stepped out my parents' front door last Thursday, expecting a typically glorious summer day in southern Oregon. Instead, I was hit with acrid wood smoke that stung my eyes and throat. The air was thick with haze that obscured the mountains. I quickly retreated inside.

Health departments across the West are mobilizing to protect residents from smoke generated by dozens of fires that have sent smoke as far east as the Midwest.

Twenty-two-year-old professional rock climber Sasha DiGiulian is attempting to become the first woman to scale the Paciencia route on the north face of Mount Eiger. The peak in the Swiss Alps is known as the "Wall Of Death."

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So that's how Ted Cruz is trying to stand out in the crowded GOP field. And now NPR political editor Domenico Montanaro is here to talk about how some of the others are working to differentiate themselves. Hey there, Domenico.

Please read the following two sentences carefully. Choose which is correct, A or B.

A. According to a brand-new national poll, two-thirds of the American public supports annual federal testing, and 59 percent oppose letting students opt out of tests, while only 1 in 4 supports opting out.

B. According to a brand-new national poll, two-thirds of the American public thinks there is too much testing in schools. As for opt-outs, they are split, with 44 percent opposing it and 41 percent supporting it.

In the chaotic days after Hurricane Katrina, law enforcement in New Orleans erroneously told evacuees to gather at the Ernest N. Morial Convention Center to await rescue.

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A Maine couple who lost their daughter to a shooting in 2010 has filed the paperwork to start the process of putting criminal background checks for gun buyers to a vote next fall. The state currently requires the checks only for sales by licensed dealers, not for private sales conducted online, at gun shows or elsewhere.

In calling for a referendum to require background checks for most sales, Judi and Wayne Richardson are working with the state chapter of the advocacy group Moms Demand Action for Gun Sense, which was formed after the Sandy Hook school shooting of 2012.

This post was updated at 2:30 p.m. ET with comment from Sen. Menendez's spokesperson.

The Justice Department forcefully defended its prosecutors Monday against allegations of misconduct and perjury lodged by lawyers for Sen. Robert Menendez, D-N.J., and an eye doctor who served as one of his longtime donors.

Stocks opened Monday with a swan dive: The Dow Jones industrial average plunged about 1,000 points, or 5 percent, in just minutes.

By midday, enough brave buyers had waded back in to push up prices — up to where losses were only around 1 percent or so.

But that didn't last. Around 3 p.m., the Dow dropped again, sliding nearly 700 points.

Stress-filled minutes ticked down until 4 p.m.: CLANG, CLANG, CLANG.

The closing bell rang. Brows were wiped, and commentators scrambled to explain why investors had seen both panic selling and panic buying.

Five months after the U.S. Justice Department said the city of Ferguson, Mo., unfairly used its courts to raise money, a new municipal judge ordered that all arrest warrants made before Dec. 31, 2014, be withdrawn.

At the end of this month, containers of Blue Bell ice cream, a staple in Texas and other states, will finally return to store shelves. The company's ice cream has been absent from stores for four months after a wide recall over listeria concerns.

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Many chefs dream of opening their own restaurant. But Laura Martinez faced an obstacle that many people thought would make that dream impossible to fulfill: The 31-year-old chef is blind.

It took two years for Martinez to open La Diosa, her tiny restaurant in Chicago, this past January. In addition to her white chef's jacket, Martinez wears dark sunglasses when she works.

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The numbers on Wall Street today spelled panic, but if you could get a glimpse at the financial district in Manhattan today, you wouldn't know there was a historic thousand-point drop of the Dow this morning. NPR's Joel Rose takes us there.

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So that's China's economy and its effect on commodities like Brazilian iron. And, Ari, I understand you actually spoke to a commodities trader here in the U.S.

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