During her lifetime, singer and dancer Carmen Miranda (shown here in a dressing room at the London Palladium in 1948) was a huge success in the United States, but rejected at home in Brazil as a sellout. George Konig/Keystone Features/Getty Images hide caption

itoggle caption George Konig/Keystone Features/Getty Images

Rio has hosted competitions that include athletes with physical impairments (above: the open water swim at Copacobana beach for the Rei e Rainha do Mar). But there's never been an event on the scale of the Paralympics. Buda Mendes/Getty Images hide caption

itoggle caption Buda Mendes/Getty Images

People, most of them unemployed, line up March 19 at a popular Itaborai, Brazil, restaurant where they can have lunch for about 30 cents. The Petrobras refinery and processing plant on the outskirts of town has been shut down; tens of thousands are now out of work in the area. Vanderlei Almeida/AFP/Getty Images hide caption

itoggle caption Vanderlei Almeida/AFP/Getty Images

Cholita, an Andean bear, was abused in a circus in Peru and is now in a small zoo. An animal welfare group has now received permission to take Cholita to a wildlife sanctuary in Colorado, along with more than 30 former circus lions. Courtesy of Animal Defenders International hide caption

itoggle caption Courtesy of Animal Defenders International

Cholita, an Andean bespectacled bear, was rescued from a circus in Peru after suffering from abuse. An animal welfare group is now attempting to take Cholita to the U.S. Courtesy of Animal Defenders International hide caption

itoggle caption Courtesy of Animal Defenders International

Embattled Brazilian President Dilma Rousseff (shown here at the 21st International Construction Salon in Sao Paulo, Brazil, on Tuesday) was elected four months ago. Her administration has been hit hard by economic problems and a massive corruption scandal at the state oil company, Petrobras. Nelson Almeida/AFP/Getty Images hide caption

itoggle caption Nelson Almeida/AFP/Getty Images

Diego Lagomarsino, a computer expert who gave late prosecutor Alberto Nisman the gun that killed him, speaks to reporters during a press conference in Buenos Aires last month. Rodrigo Abd/AP hide caption

itoggle caption Rodrigo Abd/AP