So far, the president's trip to New York City for the United Nations General Assembly appears to be anything but a success for Brazil or the country's image after a series of blunders early this week.
Rieli Franciscato was a leading expert on uncontacted tribes and was killed while on a mission to shield an isolated indigenous group from a possible hostile encounter with outsiders.
Cristiana Barreto says deforestation threatens to erase evidence of huge, dispersed civilizations, including rock art, ceremonial earthworks and waterways.
Not since 2008 has the Amazon been destroyed at a faster rate, according to Brazilian authorities. They say an area more than 12 times the size of New York City was deforested in the span of a year.