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Science 27 September 2002:
Vol. 297. no. 5590, p. 2191
DOI: 10.1126/science.297.5590.2191a
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News of the Week

U.S. ENVIRONMENT:
Report Takes Stock of Knowns and Unknowns

Ben Shouse

The United States spends more than $120 billion a year on protecting ecosystems, but the information used to evaluate such efforts is often inadequate or of questionable relevance, say ecologists and policy experts. A new report tries to provide the missing data and point out where better measures are needed. But half of its "ecosystem indicators" can't be measured yet.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)