Wednesday, 25 November 2009

Ecological footprint

The ecological footprint is a measure of human demand on the Earth's ecosystems comparing human demand with planet Earth's ecological capacity to regenerate.

It represents the amount of biologically productive land needed to regenerate the resources a human population consumes and to absorb their waste.

It is possible to estimate how much of the Earth (or how many planet Earths) it would take to support humanity if everybody lived a given lifestyle.

For 2005, humanity's total ecological footprint was estimated at 1.3 planet Earths!!!