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The report claimed that nearly 5,000 people die each year from respiratory problems caused by ozone. Ethanol use would increase ozone levels in some parts of the country that already have high levels and result in about 200 additional deaths per year.
Not everyone agreed. Roland Hwang, of the Natural Resources Defense Council, said ethanol cuts greenhouse gases and reduces one of the key ingredients in the formation of ozone. According to Hwang, Jacobson’s conclusion is an unworkable provocative concept.