"As long as the starting material is grown on farmland, Searchinger says, biofuels will be bad for the planet. But Alex Farrell at Berkeley sees a way out of this. He says the focus of the biofuels industry needs a rapid change of direction, away from using cropland — which is where most U.S. biofuels come from today — and toward other sources of starting material. "We could replace all of the ethanol that we consume in California just using waste that goes to the landfill today, and turning that into ethanol," Farrell says. Environmentally friendly biofuels could also be made from agricultural waste or grasses grown on land that's not suitable for crops. The biofuels industry is heading in that direction, but the technology to make use of fuels other than corn and soy is still in its infancy."
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Richard Harris, “Study: Ethanol Worse for Climate Than Gasoline”, All Things Considered, NPR, (February 7, 2008).
https://en.wikiquote.org/wiki/Alternative_energy
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Alternative energy
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