Will ethanol fuel caucus voters in corn country Iowa?
Clip: 01/28/2016 | 7m 9s
Ethanol took center stage in Iowa last week when Gov. Terry Branstad urged voters not to support Sen. Ted Cruz, who wants to repeal the mandate that ethanol be blended into most types of gasoline. Special correspondent David Biello of The Scientific American lays out the political stakes for candidates who oppose the Renewable Fuel Standard.
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