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There are three credible reasons for switching to hydrogen cars: reducing air pollution, reducing CO2 emissions, and reducing oil consumption. Widespread deployment of hydrogen cars could support all three objectives--but, at least for the next quarter-century, in each case there are other options that could achieve these ends faster and far more cost-effectively.
D. W. Keith is in the Department of Engineering and Public Policy, Carnegie Mellon University, Pittsburgh PA, 15213-3890, USA. E-mail: keith{at}cmu.edu A. E. Farrell is with the Energy and Resources Group, University of California, Berkeley, CA 94720-3050, USA. E-mail: afarrell{at}socrates.berkeley.edu
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In Science Magazine
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Roger A. Pielke, Jr., Roberta Klein, Genevieve Maricle, Thomas Chase;, David W. Keith, and Alexander E. Farrell (21 November 2003) Science302 (5649), 1329b.
[DOI: 10.1126/science.302.5649.1329b] |Full Text »|PDF »
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[DOI: 10.1126/science.302.5649.1329c] |Full Text »|PDF »
LETTERS
David Garman;, John M. Eiler, Tracey K. Tromp, Run-Lie Shia, Mark Allen, Yuk L. Yung;, David W. Keith, and Alexander E. Farrell (21 November 2003) Science302 (5649), 1331.
[DOI: 10.1126/science.302.5649.1331] |Full Text »|PDF »