ECOLOGICAL FOOTPRINT created by scientists in USA, Wackernagel amongst others. The Footprint accounts for human use of assets in relation to the production and availability of them. In countries in the "West", as USA and Sweden, there is a usage that is 10 times the assets that Earth can regenerate. The total average for the World is about 1,6 times the assets.
The Global Network of Ecological Footprint tells us that if we achieve a level of 1 times the assets, we are in balance with the regeneration of assets.