Tejay van Garderen says even a small risk from the Zika virus is enough to make him stay home with his wife, who is pregnant. He's seen here last year ahead of the start of the Tour de France cycling race. Christophe Ena/AP hide caption

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A man performs yoga in the Babilonia favela overlooking Rio de Janeiro in 2014. The Brazilian government made a big push to impose order on the shantytowns in advance of the World Cup in 2014 and the Olympics this summer. Babilonia was once considered a model, but violence has been on the rise in the run-up to the games. Mario Tama/Getty Images hide caption

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As Olympics Near, Violence Grips Rio's 'Pacified' Favelas

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Teenagers sit on a new sign reading "Cidade Olimpica" (Olympic City) in Rio de Janeiro's port district last October. Ahead of this summer's Olympic Games, the port district is undergoing an urban renewal program. Ticket sales have been slow, and many Brazilians cite the poor state of the economy, which is in recession. Mario Tama/Getty Images hide caption

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Brazil's Latest Headache: Ticket Sales Lag For Rio Olympics

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A boy fishes in polluted Guanabara Bay in Rio de Janeiro in August 2015. The bay will be the sailing venue for the Olympic Games this summer. Brazil is facing concerns over polluted water, mass transportation and budget issues as it prepares for the games. Mario Tama/Getty Images hide caption

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Amid Recession, Brazil Struggles With The Huge Costs Of The Olympics

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Concerns about pollution in the waters around Rio have prompted the world sailing federation to take action ahead of next year's Olympic Games. Here, garbage is seen on Bica Beach, on the banks of the Guanabara Bay, with the Sugar Loaf mountain in background, earlier this year. RICARDO MORAES/Reuters /Landov hide caption

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The U.S. Olympic Committee has chosen Boston to bid on hosting the 2024 Summer Olympics. Committee Chairman Larry Probst is seen speaking last February. Joe Scarnici/Getty Images hide caption

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Maria Victoria Agostinho, 5, walks outside her home in the Vila Autodromo area of Rio. Her family is slated for eviction, along with others in the area, to make way for building projects related to the 2016 Summer Olympics. Lianne Milton for NPR hide caption

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As Brazil Gears Up For Olympics, Some Poor Families Get Moved Out

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Local authorities celebrate a demolition explosion that's part of Rio's Porto Maravilha urbanization project, in Rio de Janeiro, on Nov. 24, 2013. The state- and federal-supported project is part of the city's redevelopment ahead of the 2016 Summer Olympic Games. Pilar Olivares/Reuters /Landov hide caption

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Olympics Set To Transform Rio — But For Better Or Worse?

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The delegation of the International Federation of Associated Wrestling Styles celebrates as its sport is voted to be included in the 2020 and 2024 Summer Olympic Games. Scott Halleran/Getty Images hide caption

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Tokyo will host the 2020 Summer Games, IOC officials said Saturday. In Tokyo, five-time Paralympian Wakako Tsuchida, left, and former Olympic athletes Hiromi Miyake, center, and Yoshiyuki Miyake cheer the news. Atsushi Tomura/Getty Images hide caption

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A team of torchbearers brings the Paralympic flame through Piccadilly Circus as the torch heads across London to the Olympic Stadium. The Paralympic Games' opening ceremony will be held Wednesday at 3:30 p.m. ET. LOCOG/Getty Images hide caption

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Michael Phelps swims in a preliminary heat at the 2012 U.S. Olympic Trials in Omaha, Nebraska. Phelps and rival Ryan Lochte were awoken from their afternoon naps by a fire alarm at their hotel Monday. Al Bello/Getty Images hide caption

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Many track fans watched online four years ago, as sprinter Usain Bolt set a world record at the Beijing Olympics. This year, NBC will stream video of all 302 events online. And Bolt, seen here showing his appreciation for video in 2010, will try to repeat his feat. Mark Dadswell/Getty Images hide caption

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NBC Will Stream The London Olympics Live — But Only To TV Subscribers

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Olympic beach volleyball player Kerri Walsh says of this year's Summer Games: "We're feeling really good; we can't wait for London. We want to do what's never been done before, which is three consecutive gold medals." Harry How/Getty Images hide caption

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Beach Volleyball Star Walsh Has Sights On London, And Babies In Diapers

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U.S. Olympic Equestrian rider Phillip Dutton jumps with Zeizos in West Grove, Pa., in this 2010 photo. Dozens of horses will fly from America to England for the 2012 Summer Olympics. Don Emmert/AFP/Getty Images hide caption

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How Do You Ship A Horse To The London Olympics? Carefully, And Via FedEx

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