Greece's Prime Minister Alexis Tsipras prepares for a TV interview at the State Television in Athens on Monday. He urged Greeks to vote "no" in Sunday's referendum on the terms of a bailout. Thanassis Stavrakis/AP hide caption

itoggle caption Thanassis Stavrakis/AP

President Barack Obama walks with Brazilian President Dilma Rousseff, second from right, during a visit to the Martin Luther King Jr. Memorial in Washington, D.C., on Monday. Evan Vucci/AP hide caption

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Treasury Secretary Jacob Lew, center, speaks with, from left, Sen. Ben Cardin, D-Md., Ellicott Dredges GM Craig Murdock and CFO Joseph Wendel during a tour of the company's manufacturing facility in March. Lew was on hand to promote investment in American infrastructure. The company has utilized the Export-Import Bank's services. Patrick Semansky/AP hide caption

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NPR's Frank Langfitt has been offering free taxi rides around Shanghai to talk to ordinary Chinese. He drives a Camry around the city, but rented a van for a trip 500 miles outside the city earlier this year. He recently decided to buy a car, which can be a complicated process in China. Yang Zhuo for NPR hide caption

itoggle caption Yang Zhuo for NPR

A Greek demonstrator urges a "no" vote in Sunday's referendum on whether Greece should accept international demands for additional financial austerity. He is holding an old 1,000 Greek drachma bank note during a rally in the northern Greek port city of Thessaloniki on Monday. Some Greeks say the country should leave the eurozone and go back to the drachma. Giannis Papanikos/AP hide caption

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Manuel Udaya Chandra's 24-year-old son disappeared in 2008, shortly before Sri Lanka's civil war ended. She holds out hope that he's still alive, though a government commission looking into those who disappeared has moved slowly. Julie McCarthy/NPR hide caption

itoggle caption Julie McCarthy/NPR