One of the great Green energy myths is that corn-base ethanol has net zero carbon emissions, and that it is preferable to the use of petrol. As Dr Mercola shows in a now deleted post, studies have shown that this is a myth of carbon neutrality. A study published in 2016 found corn grown for ethanol only offset 37 percent of carbon dioxide emissions produced by burning biofuels. Thus, ethanol as a fuel for vehicles resulted in net-positive carbon dioxide emissions that are greater than petrol.
The reasons for this come from how the actual corn is produced, which requires land to be ploughed, corn watered, usually by sprinkler systems that are backed by pumped water (requiring energy), and the corn transported and processed. All that background processes get conveniently forgotten by the Greens in their manic attacks upon fossil fuels.