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| | The sky's the limit |
 | | That, at least, is the average annual value of "natural capital" and the services provided by the world's ecosystems, says Costanza whose calculations were published in the May 15 issue of the journal Nature. |
 | | It was arrived at by calculating the economic value of a set of ecosystem services -- the production of breathable air, potable water and food, and the assimilation of wastes -- across a range of ecosystems, from forests and oceans to lakes and mountains. |
 | | Their aim, they say, is twofold: to couch the value of ecosystem services in terms policy makers like those meeting in Kyoto can understand, and to stimulate debate, perhaps the study's only sure outcome. |
| whyfiles.org /shorties/cost_nature.html (365 words) |
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