COMMENT: Ethanol use in US gasoline should be banned, not expanded

Ethanol does little for energy, harms the environment, and reinforces an oligopoly in the US. Summarizing the work of the many scientists that have calculated ethanol's net energy contribution, we find that expanding the use of ethanol will not significantly reduce America's dependence on imported energy.Ethanol also is not living up to its environmental expectations. Ozone exceedance data, automotive emissions data, permeation losses, and the implications of ethanol's poorer driveability show that ethanol increases ozone exceedances and toxic air emissions. Eth-anol production facilities emit pollutants, including carcinogens with no offsetting decrease in automotive emission...

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