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NOTICE: The project that is the subject of this report was approved by the Governing Board of the National Research Council, whose members are drawn from the councils of the National Academy of Sciences, the National Academy of Engineering, and the Institute of Medicine. The members of the committee responsible for the report were chosen for their special competences and with regard for appropriate balance.

This workshop was supported by the George and Cynthia Mitchell Endowment for Sustainability Science, the David and Lucile Packard Foundation, the USGS, USFS, NOAA, NASA, USDA, and USEPA. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the views of the organizations or agencies that provided support for the project.

International Standard Book Number-13: 978-0-309-11982-5

International Standard Book Number-10: 0-309-11982-0

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Cover: Photo credit: U.S. Department of Energy. National Renewable Energy Laboratory, PIX13531.

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