WRI-Earth Trends Data
"Based on the World Resources series, EarthTrends is a free on-line resource that highlights the environmental, social, and economic trends that shape our world. The site offers the public a comprehensive collection of vital statistics, maps, and graphics for more than 200 countries.
Much of the environmental information on the internet is fragmented, buried, or only available at a price. EarthTrends gathers data from more than 40 of the world’s leading statistical agencies, along with WRI-generated maps and analyses, into a single repository for rapid searching and retrieving. EarthTrends supplements its content with detailed metadata that reports on research methodologies and the information’s reliability. All of these resources are made available to the public at no charge."