Word: co2
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Dates: during 2000-2009
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...administrator Lisa Jackson announced that the agency would reconsider a Bush Administration decision not to regulate CO2 emissions from new coal power plants. The next day, she backed up that statement by telling the New York Times she was considering acting on an April 2007 Supreme Court decision that empowers the EPA to regulate CO2 as a pollutant under the Clean Air Act. If the EPA exercises that authority as expected - a process that would likely play out over months - it could potentially put in place one of the farthest-reaching regulations in U.S. history, affecting...
...However, carrying out the law will be anything but simple, nor will it be the most efficient way to protect the environment. The 2007 court case in question gave the EPA the authority to regulate CO2, when the Supreme Court ruled in favor of 12 states, led by Massachusetts, that brought suit against the government to force it to regulate greenhouse gases. The Bush Administration largely ignored the implications of that decision for the next two years, likely in part because of complaints from industry that regulating CO2 would be expensive and maddeningly complicated. That's a point well taken...
...using the Clean Air Act to regulate greenhouse-gas emissions directly would be unreasonably difficult, because of carbon dioxide's sheer ubiquity. In 2000, the U.S. emitted less than 18 million tons of the pollutant sulfur dioxide, chiefly from cars, power plants and factories. In the same year, national CO2 emissions reached nearly 6 billion tons, from virtually every aspect of modern life. Regulating emissions would be like trying to gather up the ocean. In addition, the Clean Air Act technically requires "major" sources of pollutants - meaning those that emit more than 250 tons a year - to acquire costly...
Then there's the green card: the $24 million Q400 burns from 30% to 40% less fuel than--and emits half the CO2 of--a 70-seater regional jet and offers up to eight more seats. ATR says its light, $18 million 72-seater goes further, consuming 30% less fuel than the Q400 and 50% less than a regional...
That one step can make an enormous impact on the atmosphere and your arteries. A 2005 study by the University of Chicago found that one person switching from a red-meat-based diet to vegetarianism could save about the same amount of CO2 as trading in a Toyota Camry for a Toyota Prius. There's no shortage of evidence that reducing red meat--Americans eat more than 60 lb. of dead cow annually--is also good for your health. CSPI estimates that replacing one 3.5-oz. serving of beef, one egg and a 1-oz. serving of cheese each...