I spent last week in the Brazilian Amazon in Porto Velho, Rondonia, on the edge of what is called the arco do incendios. The 鈥渁rc of fires鈥 is a region stretching along the yet-to-be-paved highways 319 and 230, between the towns of Humait谩 and Apui in Southern Amazonas, a state that still had as of last year.