Economics and ecology : united for a sustainable world Preface Earth is our home and it is in crisis. There are two sides to this crisis our economy on the one hand and its effect on the ecology of our home planet on the other. Our economy the human constructed part of our home represents the collection of manufactured artifacts institutions and technologies with which the human species over the millennia has designed with pride and used with arrogance to wrest a material existence from a wondrously bountiful but ultimately finite planet. Despite conventional thinking in the industrialized world that typical monetary and fiscal manipulations will restore order and put us back on the path of economic growth our economy is in danger of collapse. Furthermore over the last few decades we have experienced incessant globalization of the resource manufacturing and financial systems; and this serves to extend the threatened collapse to the entire industrialized world and not simply to the economy of the United States. Meanwhile the natural environment is similarly sending unmistakable warnings. Glaciers melt oceans are becoming dangerously acidic species become extinct natural habitats are diminishing and weather patterns become increasingly severe and unpredictable each year. The stress on resource systems of all kinds threatens to shrink the carrying capacity of the planet