"A comprehensive online database, maintained by the World Resources Institute, that focuses on the environmental, social, and economic trends that shape our world." Major data sections include:

• Coastal and Marine Ecosystems
• Water Resources and Freshwater Ecosystems
• Climate and Atmosphere
• Population, Health and Human Well-being
• Economics, Business and the Environment
• Energy and Resources
• Biodiversity and Protected Areas
• Agriculture and Food
• Forests, Grasslands and Drylands
• Environmental Governance and Institutions

Also includes "special collections" on poverty and watersheds of the world.