Could Brazil become as big an oil power as it is an agricultural one?

OF ALL the commodities Brazil exports, oil has long been an afterthought. Its oil reserves were reckoned to be relatively modest: about 12 billion barrels at the beginning of 2007, according to BP, or about 1% of the world's total. But last year, Petrobras, Brazil's partly state-owned oil firm, announced the world's biggest oil discovery since 2000: the Tupi field, which it hopes will produce between 5 billion and 8 billion barrels. Now the head of Brazil's National Petroleum Agency (ANP) says another nearby discovery might hold as much as 33 billion barrels, which would make it the third-largest field ...