Ethanol has become very popular recently. Is it because of car manufacturers worried about global warming or is it just politics as usual. Ethanol which here in the U.S is made mostly with corn is a very hot topic in the presidential debates. The Iowa caucus has been an early indication of which candidate for President of the United States might win the nomination of his or her political party , and Iowa is where corn is largely produced. So when you think that we are moving ahead to oil dependency, think again.