Global Environment Outlook (GEO) is a consultative, participatory, capacity building process for global environmental assessment and reporting on the state of the environment, trends and future outlooks. GEO is both a process involving stakeholders from across the globe, as well as a product for environmental decision-making. It aims to facilitate the interaction between science and policy.

A world-wide network of Collaborating Centres forms a strong assessment partnership at the core of the process and a focus for building capacity at various levels. Comprehensive peer review and consultative mechanisms with governments, non-governmental organizations and scientific institutions are some of the other integral elements of GEO. Advisory groups provide guidance on conceptual approaches and methodology development and capacity building.

This participatory and consultative process gives GEO assessments scientific credibility, policy relevance and authority. It targets a wide audience by providing information to support environmental management and policy development.

GEO has many other impacts. It supports multi-stakeholder networking, provides a platform for the exchange of knowledge, promotes intra and inter-regional cooperation in identifying and addressing key environmental issues and concerns and builds capacity at many levels.