U.S. News

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Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Scientists have created a synthetic stingray that's propelled by living muscle cells and controlled by light, a team reports Thursday in the journal Science.

And it should be possible to build an artificial heart using some of the same techniques, the researchers say.

Summer break for many students is a time to kick back, play outside, and hang out with friends. For a significant portion of public school students in the United States, however, the end of school also brings a familiar question—what's for lunch?

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Copyright 2016 Minnesota Public Radio. To see more, visit Minnesota Public Radio.

To the average pedestrian, it was just a curb. To an observant one, perhaps, it was an oddly misaligned curb.

To geologists, it was a snapshot of the earth's shifting tectonic plates — an accidental experiment, a field trip destination for decades.

But to the town of Hayward, Calif., it was just a bit of subpar infrastructure.

The Los Angeles Times sums up what happened next:

Attorney General Loretta Lynch, accepting the recommendation of FBI Director James Comey and others in the Department of Justice, is formally closing the investigation of Hillary Clinton's private email server without bringing any criminal charges.

The investigation centered on the presumptive Democratic presidential nominee's use of the server while she was secretary of state. Lynch announced the decision in a statement Wednesday, saying Comey and "career prosecutors and agents" unanimously recommended that the investigation be closed without charges.

More than 500,000 balancing scooters — better known as hoverboards, though they do no hovering — are being recalled because of the risk of fire or explosions.

The devices were extremely popular gifts this past holiday season. Online, they were hits in viral dance videos ... and in less-impressive videos of people falling off their new toys.

Fox News Chairman Roger Ailes has been sued for sexual harassment by a longtime Fox News host and anchor who alleges her career suffered at the network because she refused his sexual advances.

Gretchen Carlson's contract at the network expired late last month after a long stint as the co-host of the morning show Fox & Friends and nearly three years hosting her own show in the afternoon.

The accusations are not subtle.

Prescription drug prices continue to climb, putting the pinch on consumers. Some older Americans appear to be seeking an alternative to mainstream medicines that has become easier to get legally in many parts of the country. Just ask Cheech and Chong.

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In the U.S., affordable housing has always been a big concern for poor people.

Now in some of America's biggest cities, "middle class" families can't afford the rent. And that is making affordable housing a more important issue for the elected leaders who run these cities.

As part of the All Things Considered series "The New Middle," a look at what it means to be middle class in America today, NPR's Ari Shapiro went to the most expensive city in the country to see what happens when you earn a middle class salary in an upper class town.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

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Copyright 2016 NPR. To see more, visit http://www.npr.org/.

Copyright 2016 NPR. To see more, visit http://www.npr.org/.

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Copyright 2016 Fresh Air. To see more, visit Fresh Air.

Flags in New York City began flying at half-staff Monday, in honor of Roscoe C. Brown. He died Saturday at age 94 and was one of the last few "Red Tail" pilots, a subset of the Tuskegee Airmen. The Airmen were part of a grand experiment in racial integration that the Army reluctantly undertook.

The Obama administration is making it easier for people addicted to opioids to get treatment.

Health and Human Services Secretary Sylvia Burwell announced new rules Wednesday to loosen restrictions on doctors who treat people addicted to heroin and opioid painkillers with the medication buprenorphine.

When Lily Shum was little, she dreaded speaking up in class. It wasn't because she didn't have anything interesting to say, or because she wasn't paying attention or didn't know the answer. She was just quiet.

"Every single report card that I ever had says, 'Lily needs to talk more. She is too quiet,' " recalls Shum, now an assistant director at Trevor Day School in Manhattan.

She doesn't want her students to feel the pressure to speak up that she felt.

Money is on sale! Come in and enjoy the low, low prices!

On Tuesday, borrowed money got cheaper — and cheaper. For example, Bankrate, a consumer financial services company, started the day by saying lenders were offering 30-year fixed-rate mortgages at an average of just 3.4 percent.

By the end of the day, Zillow's mortgage rate tracker was showing that the national average had slipped down to 3.27 percent.

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