The Atlas of the Biosphere is an online resource which contains maps with geographically explicit data broken down into four general categories:

• Human Impacts
  • Humans and the environment from a socio-economic perspective
  • i.e. - Built-up Land, Infant Mortality Rate, Life Expectancy, Literacy Rate, Per Capita Oil Usage, Population (1995), Population Density (1999), Population Doubling Time, Population Growth Rate, and Population Under Age 15.
• Land Use
  • How humans are using the land
  • i.e. - Built-up Land, Croplands (1992), Irrigated Lands, Soil Organic Carbon, Soil pH, and Suitability for Agriculture.
• Ecosystems
  • The natural ecosystems of the world
  • i.e. - Annual Total Precipitation, Average Annual Relative Humidity and Temperature, Average Temperature, Evapotranspiration, Growing Degree Days, Net Primary Productivity, Potential Vegetation, and Soil Moisutre/Organic Carbon/pH.
• Water Resources
  • Water in the biosphere
  • i.e. - Annual Runoff/Precipitation, Evapotranspiration, Irrigated Lands, Lakes and Wetlands, Snow Depth, and Soil Moisture.

You may download maps (at 1600x1200 pixel resolution) and/or data (as an ESRI ArcView Grid). The Atlas also includes animated schematics that look at the various resource flows and pools that make up individual Earth systems.