A security guard stands at the gate of the Governor's Mansion, known as the La Fortaleza, in San Juan, Puerto Rico. Christopher Gregory/Bloomberg via Getty Images hide caption

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A doctor walks through a hallway at the Centro Medico trauma center in San Juan, Puerto Rico, in 2013. A medical exodus has been taking place for a decade in the Caribbean territory as doctors and nurses flee for the U.S. mainland, seeking higher salaries and better reimbursements from insurers. Ricardo Arduengo/AP hide caption

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SOS: Puerto Rico Is Losing Doctors, Leaving Patients Stranded
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Blue skies in San Juan, Puerto Rico belie the U.S. territory's struggle with massive debt. The islands have a generous health care program that covers nearly everyone, but economists say it has never been adequately funded. Christopher Gregory/Bloomberg via Getty Images hide caption

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Puerto Rico's Growing Financial Crisis Threatens Health Care, Too
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Mosquito larvae fill the cup of stale water that entomologist Luis Hernandez dips from a stack of old tires in a suburb of San Juan, Puerto Rico. Greg Allen/NPR hide caption

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Puerto Rico Races To Stop Zika's Mosquitoes Before Rains Begin
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Previous experience with dengue outbreaks in Puerto Rico has shown that even small amounts of standing water — as in the vases of cemeteries — can serve as breeding areas for the mosquitoes that carry dengue and Zika. Pan American Health Organization/Flickr hide caption

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With CDC Help, Puerto Rico Aims To Get Ahead Of Zika
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Aedes aegypti mosquitoes are displayed at an exhibition on Jan. 28 in Brazil. The mosquitoes can be carriers of the Zika virus. Several cases of the virus have spread to Puerto Rico. Mario Tama/Getty Images hide caption

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Puerto Rico Health Official 'Very Concerned' About Zika's Spread
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Puerto Rico faces a financial crisis with a debt of $72 billion. Joe Raedle/Getty Images hide caption

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As Debt Talks Hit An Impasse, What's Next For Puerto Rico?
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One of the banana plants in the collection at the USDA's Tropical Agriculture Research Station in Puerto Rico. It's just one of many banana collections around the world that might just hold the key to stopping a fungus's deadly reach. Dan Charles/NPR hide caption

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Our Favorite Banana May Be Doomed; Can New Varieties Replace It?
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Puerto Rico's governor, Alejandro Javier Garcia Padilla, shown here in an appearance in Washington this month, has been urging Congress to allow the commonwealth to seek bankruptcy protection. Sait Serkan Gurbuz/AP hide caption

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The Puerto Rican capitol building in San Juan is seen on July 1, 2015. The island's residents are struggling to cope with the government's $72 billion debt. Joe Raedle/Getty Images hide caption

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A woman walks in front of a business with the municipal flag painted on the entrance doors in Lares, Puerto Rico, on Sept. 2, 2015. Puerto Rico's economy has been struggling, and Puerto Ricans living on the U.S. mainland, who can vote, vow to be heard this election in an effort to help the ailing U.S. territory. Ricardo Arduengo/AP hide caption

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Puerto Ricans Vow To Have A Bigger Voice In 2016 Election
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In this Sept. 11 photo provided by Emily Morgan, Chase Morgan holds his son Haiden's hand at the Miami Children's Hospital. Emily Morgan, who unexpectedly gave birth on a cruise ship months before her due date, says she wrapped towels around her boy and, with the help of medical staff, managed to keep him alive until the ship reached port. Emily Morgan/AP hide caption

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Dinaz Campbell, 10, holds Sherry, her newly adopted dog, at an adoption clinic in Rockville, Md. Marisa Penaloza/NPR hide caption

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For Many Adopted Dogs, The Journey Home Takes A Thousand Miles
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Puerto Rico Gov. Alejandro Garcia Padilla in April delivered his budget address for the next fiscal year at the Capitol building in San Juan. Ricardo Arduengo/AP hide caption

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Economic Crisis Looms For Puerto Rico, Report Says
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Family means a lot on Cayo Santiago, an island and monkey research colony off the coast of Puerto Rico. The colony of rhesus macaques living on the island since the 1930s has allowed scientists to trace kinship ties and effects across an extended community. Anders Kelto/NPR hide caption

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Puerto Rico's Monkey Island Lures Scientists For Generations
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