SIOUX FALLS, S.D.(WNAX)- Liquid carbon dioxide pipelines, while controversial, are necessary for the future of the ethanol industry.

Brian Jennings, C.E.O. of the American Coalition for Ethanol, based in Sioux Falls, says ethanol can help lower greenhouse gas emissions.

Jennings says the pipelines are key to those cleaner emissions.

Jennings says only a few ethanol plants are able to store their own carbon dioxide.

Summit Carbon Solutions would pipe the liquid CO2 to North Dakota while the Navigator pipeline would move the liquid to storage in Illinois.