The term ecological footprint is used to indicate the impact of a single individual on the Earth's environment. It can also be used to indicate the impact of a single society on the Earth's environment. The image of a footprint is visual and universally understood: Footprints can vary in size from small to large, and they can be shallow or deep. The goal of green living for consumers is to have the least footprint possible, with no trace of a footprint as ideal.

At this time, the world's best, or at least leading, environmental indicator is the ecological footprint calculation. Using currently prevailing technology, a given group of people needs a certain amount of land and water to sustain itself and to dispose of its wastes. ...

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