Nobel Prize winning chemist: Biofuel crop production is speeding up global warming

An article by Nobel prize winning chemist Paul J. Crutzen is reported to say that that crops used in the US and Europe to make biofuels were speeding up global warming. The article stated that use of canola, or rapeseed, to produce biodiesel resulted in 70% higher emissions than diesel, taking into account the use of fertilizers. The article found that the fertilizers release nitrous oxide, which is 300 times more insulating than carbon dioxide.

Crutzen’s report echoes sentiments published earlier this year and widely distributed by the National Petrochemical & Refiners Association. The NPRA pointed attention to an op-ed in the Washington Post opposing projects in the Chesapeake Bay run off area due to excessive nitrogen levels; another article in Bloomberg pointed out the increasing size of the Gulf Of Mexico dead zone due to excessive production of corn in the Mississippi River watershed.

Run-Off Harms the Chesapeake. “Despite rising food prices, it seems that nearly everyone is turning to corn-based ethanol as their choice for alternative fuel. Hidden behind these headlines, though, is an equally important but less visible cost: water pollution. Corn is a ‘leaky’ crop, losing more nitrogen per acre than most other crops. In the Washington region, much of this excess nitrogen ends up polluting the Chesapeake Bay and robbing fish, crabs and oysters of oxygen. For farmers, the demand for alternative fuels has brought much-needed, and deserved, increases in corn prices. Unfortunately, this summer’s drought will keep mid-Atlantic farmers from realizing their potential windfall, and any unused nitrogen will wash into the bay this winter.” (Tom Simpson and Daphne Pee, op-ed, “How Corn Ethanol Could Pollute the Bay,” The Washington Post, August 26, 2007

Increased Levels of Farm Waste Are Hurting Gulf Waters. “The crop that is bringing prosperity to farmers is making it harder for commercial fishermen in Louisiana to make a living. U.S. farmers this spring planted the most acreage with corn since 1944, after demand for ethanol pushed the grain’s price to a 10-year high. That has increased the level of farm waste flowing into the Mississippi River basin, which scientists blame for creating a pocket along the Louisiana coast where shrimp and other sea life cannot survive. The Gulf of Mexico’s so-called Dead Zone is expected to cover a record 8,543 square miles, or 22,126 square kilometers, this year and stretch into waters off Texas, said Nancy Rabalais, chief scientist for a study team at the Louisiana Universities Marine Consortium. … Corn fuels the zone because it requires more nitrogen-based fertilizer than crops like soybeans, said Eugene Turner, a Louisiana State University oceanographer. Nitrogen and other nutrients eventually reach the Gulf of Mexico, feeding microscopic organisms that deplete oxygen levels as they die and decompose on the sea floor. Shrimp and fish suffocate unless they escape. … ‘The rah-rah sort of drowns out the environmental side,’ [Rabalais] said. ‘If our federal government subsidizes more corn, they’re working against water quality.’” (Tony Cox, “Ethanol Demand Seen Harming U.S. Fishermen,” Bloomberg, July 23, 2007

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