How do you place an economic value on biodiversity? How does the trend toward high-tech industries affect pressure on environmental resources, at home and abroad? How can we build an environmentally sustainable future that makes sense economically? An international group of ecologists and economists gathered at the Missouri Botanical Garden in 1998 to discuss ecosystem services and the economy. Examples are drawn from New York Citys Catskill and Croton Watersheds, Australian savannas, Latin American cities and forests, European industrial systems, African river basins, and more.