[Antora in Auto Notion] An ethanol plant in South Dakota just switched on what its builders call a giant toaster, more than 200 boxes of solid carbon heated to 2,400 degrees until they glow hotter than lava, banking days of cheap wind power as heat

Corn ethanol gets sold as the greener thing in your gas tank, the renewable splash that has been blended into American gasoline for years. The part that rarely comes up is how it gets made. The vast majority of the more than 200 corn ethanol plants in the US still burn natural gas to produce the heat that turns corn into fuel, according to DTN Progressive Farmer. So a lot of “clean” fuel starts its life with a gas flame.

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