Late last year in Goldfield, Iowa, a refinery began pumping out a
stream of ethanol, which supporters call the clean, renewable fuel of
There's just one twist: The plant is burning 300 tons of coal a day to
turn corn into ethanol - the first US plant of its kind to use coal
instead of cleaner natural gas.
An hour south of Goldfield, another coal-fired ethanol plant is under
construction in Nevada, Iowa. At least three other such refineries are
being built in Montana, North Dakota, and Minnesota.
The trend, which is expected to Read more