Response to Comment on “Life-Cycle Analysis of Alternative Automobile Fuel/Propulsion Technologies”

We thank Seager and Brown (1) for their comments. We agree that “LCA can be an objective, scientific approach to testing certain hypotheses ...,” that “The greatest value in [our article] ... is not conclusions, per se, but the methodology employed” and that the value of abating air pollutants ...”vary widely”. In particular, our valuation of air pollutants displays a wide range of values (2). The other points require discussion.