Nota de disertación: Could everyone on the planet live like North Americans do today? Has technology increased our ecological efficiency? Can we reduce our resource consumption and still improve our quality of life? "Our ecological footprint" cuts through the talk about sustainability and introduces a revolutionary new way to determine humanity´s impact on the Earth. It presents and exciting and powerful tool for measuring and visualizing the resources required to sustain our households, communities, regions and nations. Equipped with useful charts and through-provoking illustrations, "Our ecological footprint" converts de seemingly complex concepts of carrying capacity, sustainability, resource use, waste disposal, and more into a graphic form that everyone can grasp and utilize. Of vital importance for community activists and planners, "Our ecological footprint" is also a rich resource for teachers, students and policy markers at all levels. It will help communities around the world make their lifestyles more sustainable and ensure a consistent quality of life for present and future generations.