Ethanol was once touted (and still is by some) as an effective way to slow global climate change, but that effectiveness is increasingly being questioned as the link between ethanol production and rising food and oil prices becomes clearer (from Washington Post):
Across the country, ethanol plants are swallowing more and more of the nation's corn crop. This year, about a quarter of U.S. corn will go to feeding ethanol plants instead of poultry or livestock. That has helped farmers like Johnson, but it has boosted demand -- and prices -- for corn at the same time global grain demand is growing.
And it has linked food and fuel prices just as oil is rising to new records, pulling up the price of anything that can be poured into a gasoline tank. "The price of grain is now directly tied to the price of oil," says Lester Brown, president of Earth Policy Institute, a Washington research group. "We used to have a grain economy and a fuel economy. But now they're beginning to fuse."
Not everyone thinks it's fantastic. People who use corn to feed cattle, hogs and chickens are being squeezed by high corn prices. On Monday, Tyson Foods reported its first loss in six quarters and said that its corn and soybean costs would increase by $600 million this year. Those who are able, such as egg producers, are passing those high corn costs along to consumers. The wholesale price of eggs in the first quarter soared 40 percent from a year earlier, according to the Agriculture Department. Meanwhile, retail prices of countless food items, from cereal to sodas to salad dressing, are being nudged upward by more expensive ingredients such as corn syrup and cornstarch.
While food scientists around the world have said that halting the use of food-based biofuels, such as ethanol, would help combat the global food crisis, Bush has called for increasing the use of ethanol.