Robert Costanza briefly present various methods of environmental valuation, and talks about the changes in the global value of ecosystem services. He then introduces the major ecosystem services, and how different methods of valuation affect the preferred policies to address environmental issues.

This article is the first of a series that offers a new paradigm for economics, the “multilevel paradigm,” using generalized Darwinism as its theoretical framework. Generalized Darwinism refers to all processes that combine the ingredients of variation, selection, and replication – not just genetic evolution – making it relevant to the cultural evolution of economic systems that are embedded in political, social, and environmental systems.