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The people of Rwanda are required to take part in the national clean-up day, Umuganda, on the last Saturday of every month. Above: getting grass under control in Kigali, the capital city. Forster/ullstein bild via Getty Images hide caption

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Forster/ullstein bild via Getty Images

How Rwanda Tidied Up Its Streets (And The Rest Of The Country, Too)

On the last Saturday of the month, citizens must spend 3 hours beautifying the nation. Some people question the authoritarianism approach. But the results are impressive.

Graffiti on a wall commemorates the victims of the Malaysia Airlines Flight MH17 crash in 2014 in Koog aan de Zaan, The Netherlands. The aircraft was shot down by Russian-backed rebels in eastern Ukraine using a Russian-made surface-to-air missile. Michel Porro/Getty Images hide caption

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Michel Porro/Getty Images

Australian Couple Who Lost Children In MH17 Blame Trump For Not Confronting Putin

Russia has repeatedly denied any involvement in the destruction of the Malaysia Airlines flight shot down by a Russian missile over eastern Ukraine in 2014, killing 298 passengers and crew.

Paul Blow for NPR

Medicaid Under The Influence: How Drugmakers Sway Medication Options For Patients

The Center for Public Integrity

Drug companies have infiltrated nearly every part of the process that determines how their drugs will be covered by Medicaid, an investigation by NPR and the Center for Public Integrity finds.

Medicaid Under The Influence: How Drugmakers Sway Medication Options For Patients

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In 1994 Nelson Mandela revisited the cell at Robben Island prison where he was jailed for more than two decades. Louise Gubb/Corbis via Getty Images hide caption

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Louise Gubb/Corbis via Getty Images

Nelson Mandela's Prison Letters: 'One Day I Will Be Back At Home'

The late South African leader would have turned 100 on Wednesday. As part of the commemorations, a new book brings together many of the deeply personal letters he wrote during his 27 years in prison.

Nelson Mandela's Prison Letters: 'One Day I Will Be Back At Home'

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U.S. Supreme Court Justice Ruth Bader Ginsburg (left) takes the oath of office in August 1993 as President Bill Clinton looks on. A new album, Notorious RBG in Song sets events from Ginsburg's life to music. Kort Duce/AFP/Getty Images hide caption

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Kort Duce/AFP/Getty Images

Justice Ruth Bader Ginsburg's Life Immortalized In Song

Songs about the life and career of the Supreme Court justice, written in secret by her daughter-in-law, now make their debut on a very personal album called Notorious RBG in Song.

Justice Ruth Bader Ginsburg's Life Immortalized In Song

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In "Como," the undisputed king of reggaeton joins forces with newcomer Kim Viera for an urbano reinvention of the summer love song. Meredith Truax/Courtesy of the artist hide caption

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Meredith Truax/Courtesy of the artist

Kim Viera, Daddy Yankee Show You 'Como': Our Favorite Latin Songs This Week

Nuyorican newcomer Kim Viera teams up with Daddy Yankee for a summer love hit, Arcangel and J Balvin go disco-over-dembow and Dillon Francis and De La Ghetto keep moombahton alive.

UCLA researchers are using a radioactive tracer, which binds to abnormal proteins in the brain, to see if it is possible to diagnose chronic traumatic encephalopathy in living patients. Warmer colors in these PET scans indicate higher concentrations of the tracer. UCLA hide caption

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UCLA

Scientists Hunt For A Test To Diagnose Chronic Brain Injury In Living People

Doctors are closer to a test in live brains that could help diagnose chronic traumatic encephalopathy, a disease that's been linked to concussions and other repeated brain assaults.

Current and former tenants are suing Kushner Cos., the real-estate firm owned by the family of President Trump's son-in-law and White House senior adviser, Jared Kushner, for alleged harassment. Susan Walsh/AP hide caption

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Susan Walsh/AP

Tenants Sue Kushner Cos. For Alleged Harassment, N.Y. Governor Launches Probe

Current and former tenants say the company exposed them to toxic dust, noise and rats, forcing them out of their rent-stabilized apartments and making way for luxury-condo buyers.

Then-Republican presidential candidate Donald Trump speaks at the National Rifle Association's NRA-ILA Leadership Forum during the NRA Convention at the on May 20, 2016, in Louisville, Ky. Scott Olson/Getty Images hide caption

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Maria Butina Case Bolsters Understanding of 'Infiltration' In Russian 2016 Attack

The Justice Department has charged a Russian woman who sought to cultivate influence with American political figures via the NRA, affirming a separate plank of the Kremlin's influence campaign.

Brian Kleinsasser, left, who works in the hog barn at Cool Spring Colony, helps Jake Waldner set up the Hutterite table during a Long Table dinner event at The Resort at Paws Up. Stuart Thurlkill via Paws Up hide caption

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Stuart Thurlkill via Paws Up

Hutterites: The Small Religious Colonies Entwined With Montana's Haute Cuisine

The peace-driven Anabaptist sect, made up of families who live and work together, has built a relationship with high-end resorts, supplying poultry, produce and bread for chefs.

Crime scene tape surrounds the Mandalay Bay Resort and Casino in Las Vegas on Oct. 2, 2017. The broken windows show the room where a gunman sat as he opened fire on a country music concert, killing 58 people and wounding more than 500 others. Mark Ralston/AFP/Getty Images hide caption

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Mark Ralston/AFP/Getty Images

MGM Files Lawsuits Denying Liability Over Las Vegas Shooting

In October 2017, a gunman fired from his room at the Mandalay Bay in Las Vegas, killing 58 people and injuring hundreds. Now MGM, which owns the hotel, is asking the courts to declare it not liable.

Christophe Lehenaff/Getty Images/Photononstop RF

U.S. And U.K. Remain United, Not Divided, By Their Common Language

Fresh Air

Linguist Geoff Nunberg says none of the differences between American and British English would be interesting if the nations didn't share a core vocabulary grown from a common literary tradition.

Opinion: U.S. And U.K. Remain United, Not Divided, By Their Common Language

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