According to Global Footprint Network’s Mathis Wackernagel, humanity is living off its ecological credit card. Since 2003, the environmental organization he cofounded with Susan Burns has made it its mission to end ecological overshooting by ensuring that ecological concerns are increasingly weighed in decision-making. The Oakland-based Global Footprint Network promotes programs to influence decision makers at all levels of society (government, cities and corporations). Key to this approach has been the development of the Ecological Footprint – an analytic tool that functions as a sophisticated indicator bolstering sustainable development policies by quantifying human ecological impact. In order to create a critical mass of institutions using the Ecological Footprint as an accepted tool, the Global Footprint Network has developed a network of more than ninety partners across six continents that play a local advocacy role and contribute to the ongoing refinement of the tool’s methodology and application. Web site: http://www.footprintnetwork.org/en/index.php/GFN/ Climate and economy