The Millennium Ecosystem Assessment (MA) is an international scientific appraisal that assessed the consequences of ecosystem change for human well-being. The study found that 60 percent of the world’s ecosystem services assessed have been degraded or are being used unsustainably. WRI is building on the Assessment to help public and private sector decision makers sustain the capacity of ecosystems to meet human needs.
- Explore Millennium Ecosystem Assessment reports—represents the most comprehensive scientific description to date of ecosystem change
- Explore our work on ecosystem services—strives to reduce ecosystem degradation by advancing ecosystem service-based strategies, policies, and markets




