Economic systems drive human impact on Spaceship Earth. The great issue of our times is whether economic growth can be sustained as the environment, resources and life support systems of the planet are impacted and consumed at exponentially accelerating rates. Can a steady state or circular economy as a goal for societies ever replace the universal political desire to maximise the expansion of GNP? Can the increasing concentration of wealth in fewer and fewer hands be reversed? Is the increasing concentration of production and distribution in the hands of a few global brands desirable? There is a growing movement of pressure groups against wealth concentration: click here for examples. The articles in this section seek to explore questions such as these.