Looking at the ethanol sector, it is the classic good news/bad news scenario with the former coming in the short term and the latter occurring over the next year or so.Good NewsFirst, corn prices remain low, and that is helping sustain margins for ethanol mills as well as boost production. Through the week ending 11 August, output was averaging 1.02 million barrels per day, which equates to 15.7 billion gallons of ethanol. For reference, last year’s total production was 15.33 billion gallons.Second, gasoline production by U.S. refineries has been above the five-year average and near record levels for the first half of 2017. For the week ending 21 April 2017, U.S. refinery runs exceeded 17.5 million barrels/day for the first time since the U...