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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