But several new studies show the biofuel boom is doing exactly the opposite of what its proponents intended: it's dramatically accelerating global warming, imperiling the planet in the name of saving it. Corn ethanol, always environmentally suspect, turns out to be environmentally disastrous. Even cellulosic ethanol made from switchgrass, which has been promoted by eco-activists and eco-investors as well as by President Bush as the fuel of the future, looks less green than oil-derived gasoline.
Meanwhile, by diverting grain and oilseed crops from dinner plates to fuel tanks, biofuels are jacking up world food prices and endangering the hungry. The grain it takes to fill an SUV tank with ethanol could feed a person for a year. [...]
Biofuels do slightly reduce dependence on imported oil, and the ethanol boom has created rural jobs while enriching some farmers and agribusinesses. But the basic problem with most biofuels is amazingly simple, given that researchers have ignored it until now: using land to grow fuel leads to the destruction of forests, wetlands and grasslands that store enormous amounts of carbon.
The article talks a lot about Brazil, but it goes into the political reality of why corn ethanol is being touted in the U.S. as well.
If biofuels are the new dotcoms, Iowa is Silicon Valley, with 53,000 jobs and $1.8 billion in income dependent on the industry. The state has so many ethanol distilleries under construction that it's poised to become a net importer of corn. That's why biofuel-pandering has become virtually mandatory for presidential contenders. John McCain was the rare candidate who vehemently opposed ethanol as an outrageous agribusiness boondoggle, which is why he skipped Iowa in 2000. But McCain learned his lesson in time for this year's caucuses. By 2006 he was calling ethanol a "vital alternative energy source."
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