In this Sept.17, 2015, Antonio Carlos Vieira, 45, herd cattle at the Santa Izabel ranch, Alegrete municipality, Rio Grande do Sul state, Brazil. (AP Photo/Eraldo Peres)
In this Sept.17, 2015, Antonio Carlos Vieira, 45, herd cattle at the Santa Izabel ranch, Alegrete municipality, Rio Grande do Sul state, Brazil. (AP Photo/Eraldo Peres)
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