Footprints for Chrome
More About Footprints
Footprints features an interactive rollover of Natural Earth imagery, a graphically enhanced satellite data set that depicts the earth in its ideal state, unaltered by human activity.
This is contrasted with the earth's surface as it actually appears today, a planet clearly showing the effects of a population approaching 7 billion.
An excellent educational resource for studying the environment and ecology.
A soon to be released commercial version will feature recent World Bank visual data on population, growth and the environment, making it a valuable reference tool.