OnLine Forum:

          THE VALUE OF THE WORLD'S ECOSYSTEM SERVICES
                        AND NATURAL CAPITAL

The forum is a discussion of an exciting, controversial, and ambitious
article, which is the first attempt to place a dollar figure on the
annual value of global ecological life-support systems.  The article
just appeared in the May 15th issue of NATURE and was aired on NPR.

The authors of the article are:
   Robert Costanza, Ralph d'Arge, Stephen Farber, Monica Grasso, Bruce
   Hannon, Karin Limburg, Shahid Naeem, Robert V. O'Neill, Jose Paruelo,
   Robert G. Raskin, Paul Sutton and Marjan van den Belt

NATURE is making a copy of the article available online.  Links to
the article plus other material about the article can be found
   http://csf.colorado.edu/isee

To participate or to listen to the moderated discussion of this
article, send the request
   sub isee-forum Yourfirstname Yourlastname
To: LISTPROC@csf.colorado.edu

The seminar is co-sponsored by:
    ISEE: International Society for Ecological Economics
    CSF:  Communications for a Sustainable Future

    Professor Don Roper               Douglas Hinrichs
    University of Colorado            ISEE Executive Director
    CSF-Director                      ISEE Bulletin Editor
    roper@csf.colorado.edu            hinrichs@cbl.cees.edu