Cassia Mendes, who has worked as a housekeeper for more than 20 years, cleans a house in Sao Paulo, Brazil, on Feb. 19, 2012. Brazil enacted on April 2 a constitutional amendment to grant domestic workers health insurance and other benefits. AFP/Getty Images hide caption

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A drug-sniffing dog checks bags at a Brazilian border crossing with Bolivia on April 3. With an increase in illegal immigration and drug smuggling, Brazil is planning to build a virtual fence along its 10,000-mile border. Yasuyoshi Chiba/AFP/Getty Images hide caption

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BRICS leaders, from left, Indian Prime Minister Manmohan Singh, Chinese President Xi Jinping, South African President Jacob Zuma, Brazil's President Dilma Rousseff and Russian President Vladimir Putin pose for a group picture during the BRICS 2013 Summit in Durban, South Africa, on Wednesday. Sabelo Mngoma/AP hide caption

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A salesperson demonstrates the Apple iPhone 4 in New Delhi, India. While mobile device use is growing rapidly in emerging markets, Apple's current product line may prove prohibitively expensive for many consumers. Manish Swarup/AP hide caption

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A truck carrying hardwood timber drives along a rural road leading to Paragominas, Brazil, on Sept. 23, 2011. The city has become a pioneering "Green City," a model of sustainability with a new economic approach that has seen illegal deforestation virtually halted. Andre Penner/AP hide caption

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Drag queens at an outdoor restaurant in Copacabana incorporate safe sex messages into a show of lip-synced songs and risque jokes. Jason Beaubien/NPR hide caption

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Researchers with HIV medication at a public research lab at the Oswaldo Cruz Foundation, or Fiocruz, in Rio de Janeiro. Jason Beaubien/NPR hide caption

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Brazilian Sports Minister Aldo Rebelo says his country no longer recognizes FIFA secretary general Jerome Valcke as a spokesman after Valcke slammed Brazil's World Cup preparations. AFP/AFP/Getty Images hide caption

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Oranges for sale at a market in Rio de Janeirol. Antonio Scorza/AFP/Getty Images hide caption

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Should our growing understanding of pre-Columbian settlements in the Amazon have any bearing on the debate over the region's development today? Antonio Scorza/AFP/Getty Images hide caption

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