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Cost estimates rocket for uninvited guests
Introduced species-including weeds, rats, and disease microbes-cost the United States some $122 billion a year-more than 75 times the previous assessment.
Pimental, D. 1999. The impact of non-indigenous species: An illustration of integrative sciences. Meeting of the American Association for the Advancement of Science. January. Anaheim, Calif.
Additional information about the costs associated with non-indigenous species can be found at Cornell University's Web site at http://www.news.cornell.edu/releases/Jan99/species_costs.html.
College of Agriculture and Life Sciences
Ithaca, NY 14850-2212
From Science News, Vol. 155, No. 6, February 6, 1999, p. 91. Copyright © 1999, Science Service.