Berkeley CSUA MOTD:Entry 46354
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2025/05/24 [General] UID:1000 Activity:popular
5/24    

2007/4/18 [Science/GlobalWarming] UID:46354 Activity:kinda low 90%like:46363
4/18    Oops.  Ethanol is worse for the air
     http://sfgate.com/cgi-bin/article.cgi?file=/c/a/2007/04/18/MNG7EPAN601.DTL
        \_ Biofuels have 10 times worse CO2 emissions than fossil fuels
           http://tinyurl.com/3dog3p
           \_ but a combination of biofuels with Biointensive farming
           would be ideal
        \_ Ride bike!  Damn, I've always wanted to say that....
           \_ Do you USE LINUX?  Or SMASH KIDS?
           \_ But don't drink too much alcohol or fart a lot when you ride
              bike!
2025/05/24 [General] UID:1000 Activity:popular
5/24    

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sfgate.com/cgi-bin/article.cgi?file=/c/a/2007/04/18/MNG7EPAN601.DTL
Google Bookmarks Georgia (default) Verdana Times New Roman Arial New! If ethanol ever gains widespread use as a clean alternative fuel to gasoline, people with respiratory illnesses may be in trouble. A new study out of Stanford says pollution from ethanol could end up creating a worse health hazard than gasoline, especially for people with asthma and other respiratory diseases. "Ethanol is being promoted as a clean and renewable fuel that will reduce global warming and air pollution," Mark Z Jacobson, the study's author and an atmospheric scientist at Stanford, said in a statement. "But our results show that a high blend of ethanol poses an equal or greater risk to public health than gasoline, which already causes significant health damage." The study appears in today's online edition of Environmental Science & Technology, a publication of the American Chemical Society. It comes at a time when the Bush administration is pushing plans to boost ethanol production and the nation's automakers are required by 2012 to have half their vehicles run on flex fuel, allowing the use of either gasoline or ethanol. Jacobson used a computer to model how pollution from ethanol fuel would affect different parts of the country in 2020, when ethanol-burning vehicles are expected to be common on America's roadways. He found that ethanol-burning cars could boost levels of toxic ozone gas in urban areas, but that Los Angeles residents would be by far the hardest hit because of the city's reliance on the automobile and environmental factors that tend to concentrate smog there. His study showed that the city would experience a 9 percent increase in the rate of ozone-related respiratory deaths -- 120 more deaths per year -- compared with what would have been projected in 2020 assuming continued gasoline use. Pollution from ethanol would be riskier than pollution from gasoline because when ethanol breaks down in the atmosphere, it generates considerably more ozone. Ozone is a highly corrosive gas that damages the delicate tissues of the lungs. In fact, it's so corrosive that it can crack rubber and wear away statues, Jacobson told The Chronicle. Jacobson's study focuses on the health effects of an ethanol type called E85, a highly publicized fuel composed of 85 percent ethanol and 15 percent gasoline. Susan Collins and Olympia Snowe, both R-Maine, introduced a bill to reduce carbon dioxide emissions from motor vehicles. The bill would "require fuel suppliers to increase the percentage of low-carbon fuels -- biodiesel, E85 ... hydrogen, electricity, and others -- in the motor vehicle fuel supply" by 2015, according to a March 30 press release from Feinstein's office. Reacting to Jacobson's study, Feinstein issued a statement Tuesday. "All of these fuels emit certain pollutants, and those pollutants have to be known and evaluated for their health effects. There can be no real rush to judgment about these fuels. "We've got to find a way to develop low-carbon fuels that do not have adverse health effects." A spokesman for the state Air Resources Board said officials there were still studying prepublication copies of the Jacobson paper and would have no immediate comment. "This is the first we've heard of it," said board spokesman Dimitri Stanich. In the meantime, he said, "there are multiple avenues for reducing California's carbon 'footprint,' (with) hydrogen and ethanol being part of that plan. The study also attracted the attention of environmental scientists. The basic principles of Jacobson's paper are sound, David Pimentel, an ecology professor emeritus at Cornell University, wrote in an e-mail. "The burning of ethanol releases large quantities of ozone, a serious air pollutant," he said. "In addition, the use of ethanol as a fuel releases formaldehyde and acetaldehyde, plus benzene and butadiene. All of these are carcinogens and are a threat to public health." Jacobson's study, however, concluded that the cancer-causing effects of ethanol would be roughly comparable to those of gasoline. Chris Somerville, a Stanford professor who chairs the executive committee for the recently announced BP-funded Energy Biosciences Institute at UC Berkeley, Lawrence Berkeley National Laboratory and the University of Illinois, said the study was interesting and it "should be followed up with experimental work." It is "possible that ethanol will not be the major biofuel in 2020," he said. "I see ethanol as a transitional fuel that will eventually be replaced by ... I am just uncertain whether it will be done by 2010 or whether it may take longer." The institute is slated to develop a new generation of carbon-neutral biofuels, including ethanol. Alex Farrell, a Berkeley professor of energy and resources, was also complimentary of the study. "It's a good scientific paper that has taken the first look at the air-quality impacts of ethanol in a worst-case scenario," he said. "It is definitely my opinion that ethanol is not the only solution to air pollution." Jacobson's computer model for Los Angeles is extremely high-resolution, as such models go. It breaks the Los Angeles atmosphere into a three-dimensional grid akin to 100,000 "boxes" stacked more than 10 miles high. Each box measures 3 miles wide and a few hundred feet deep. He said he isn't surprised that no one previously tried to model the long-term health impacts of ethanol in such detail "because it's very complicated." "The only reason I was able to do it is because I've been building this model for 18 years now," he said.
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tinyurl.com/3dog3p -> www.monbiot.com/archives/2007/03/27/a-lethal-solution/#more-1051
A Lethal Solution Posted March 27, 2007 We need a five-year freeze on biofuels, before they wreck the planet. The governments using biofuel to tackle global warming know that it causes more harm than good. In theory, fuels made from plants can reduce the amount of carbon dioxide emitted by cars and trucks. Plants absorb carbon as they grow - it is released again when the fuel is burnt. By encouraging oil companies to switch from fossil plants to living ones, governments on both sides of the Atlantic claim to be "decarbonising" our transport networks. In the budget last week, Gordon Brown announced that he would extend the tax rebate for biofuels until 2010. From next year all suppliers in the UK will have to ensure that 25% of the fuel they sell is made from plants - if not, they must pay a penalty of 15p a litre. By 2050, the government hopes that 33% of our fuel will come from crops. Last month George Bush announced that he would quintuple the US target for biofuels: by 2017 they should be supplying 24% of the nation's transport fuel. Only that they are a formula for environmental and humanitarian disaster. In 2004 this column warned that biofuels would set up a competition for food between cars and people. The people would necessarily lose: those who can afford to drive are, by definition, richer than those who are in danger of starvation. It would also lead to the destruction of rainforests and other important habitats. I received more abuse than I've had for any other column, except when I attacked the 9/11 conspiracists. I was told my claims were ridiculous, laughable, impossible. I thought these effects wouldn't materialise for many years. Since the beginning of last year, the price of maize has doubled. The price of wheat has also reached a 10-year high, while global stockpiles of both grains have reached 25-year lows. Already there have been food riots in Mexico and reports that the poor are feeling the strain all over the world. The US department of agriculture warns that "if we have a drought or a very poor harvest, we could see the sort of volatility we saw in the 1970s, and if it does not happen this year, we are also forecasting lower stockpiles next year." According to the UN Food and Agriculture Organisation, the main reason is the demand for ethanol: the alcohol used for motor fuel, which can be made from both maize and wheat. Farmers will respond to better prices by planting more, but it is not clear that they can overtake the booming demand for biofuel. Even if they do, they will catch up only by ploughing virgin habitat. Already we know that biofuel is worse for the planet than petroleum. The UN has just published a report suggesting that 98% of the natural rainforest in Indonesia will be degraded or gone by 2022(10). Just five years ago, the same agencies predicted that this wouldn't happen until 2032. But they reckoned without the planting of palm oil to turn into biodiesel for the European market. This is now the main cause of deforestation there and it is likely soon to become responsible for the extinction of the orang utan in the wild. As the forests are burnt, both the trees and the peat they sit on are turned into carbon dioxide. A report by the Dutch consultancy Delft Hydraulics shows that every tonne of palm oil results in 33 tonnes of carbon dioxide emissions, or ten times as much as petroleum produces(11). Biodiesel from palm oil causes TEN TIMES as much climate change as ordinary diesel. Sugarcane producers are moving into rare scrubland habitats (the cerrado) in Brazil and soya farmers are ripping up the Amazon rainforests. As President Bush has just signed a biofuel agreement with President Lula, it's likely to become a lot worse. Indigenous people in South America, Asia and Africa are starting to complain about incursions onto their land by fuel planters. A petition launched by a group called biofuelwatch, begging western governments to stop, has been signed by campaigners from 250 groups(12). The British government is well aware that there's a problem. On his blog last year the environment secretary David Miliband noted that palm oil plantations "are destroying 07% of the Malaysian rain forest each year, reducing a vital natural resource (and in the process, destroying the natural habitat of the orang-utan). The reason governments are so enthusiastic about biofuels is that they don't upset drivers. They appear to reduce the amount of carbon from our cars, without requiring new taxes. It's an illusion sustained by the fact that only the emissions produced at home count towards our national total. The forest clearance in Malaysia doesn't increase our official impact by a gram. In February the European Commission was faced with a straight choice between fuel efficiency and biofuels. It had intended to tell car companies that the average carbon emission from new cars in 2012 would be 120 grams per kilometre. After heavy lobbying by Angela Merkel on behalf of her car manufacturers, it caved in and raised the limit to 130 grams. It announced that it would make up the shortfall by increasing the contribution from biofuel(14). It can't: its consultants have already shown that if it tries to impose wider environmental standards on biofuels, it will fall foul of world trade rules(16). And even "sustainable" biofuels merely occupy the space that other crops now fill, displacing them into new habitats. It promises that one day there will be a "second generation" of biofuels, made from straw or grass or wood. By the time the new fuels are ready, the damage will have been done. We need a moratorium on all targets and incentives for biofuels, until a second generation of fuels can be produced for less than it costs to make fuel from palm oil or sugarcane. Even then, the targets should be set low and increased only cautiously. This would require a huge campaign, tougher than the one which helped to win a five-year freeze on growing genetically modified crops in the UK. That was important - GM crops give big companies unprecedented control over the foodchain. But most of their effects are indirect, while the devastation caused by biofuel is immediate and already visible. This is why it will be harder to stop: encouraged by government policy, vast investments are now being made by farmers and chemical companies. Budget 2007, Chapter 7 2 Department for Transport, 21^st December 2005. Renewable Transport Fuel Obligation (RTFO) feasibility report. html 4 The US Energy Information Administration gives US gasoline consumption for October 2006 (the latest available date) at 287,857,000 barrels. If this month is typical, annual consumption amounts to 345 billion barrels, or 145 billion gallons. htm In the state of the union address, Bush proposed a mandatory annual target of 35 billion gallons. Food prices to rise as biofuel demand keeps grains costly. Financial Times8 Keith Collins, chief economist, US Department of Agriculture. Quoted by Eoin Callan and Kevin Morrison, 5^th March 2007, ibid. State of Emergency: Illegal Logging, Fire and Palm Oil in Indonesia's National Parks. Commission Of The European Communities, 7^th February 2007. Results of the review of the Community Strategy to reduce CO2 emissions from passenger cars and light-commercial vehicles. Feasibility Study on Certification for a Renewable Transport Fuel Obligation. Cellulosic Ethanol: Biofuel Researchers Prepare to Reap a New Harvest.