 All these points are particularly urgent because the problems of limited natural resources and climate change raise issues about the ability of the market-cum-political-framework as we know it to steer towards a more sustainable path. Because many of the activities that harm the natural environment take place as market activities, regulating them will often require a regulation of markets. Given how difficult it is to establish such a regulatory framework on a global scale, however, voluntary action by individual market participants also seems to be called for, e.g., by buying sustainably grown products and cars with a low carbon emission. Such voluntary actions should, ideally, create incentives for companies to find innovative solutions to reduce resource consumption and energy consumption (cf. also 5.2 below). Although they are certainly part of the problem, markets might then also be part of the solution to the challenges raised by poverty, resource depletion, and climate change.