The podcast episodes highlight the issue of resource depletion, particularly the depletion of fossil fuels and other finite resources, as a driving factor behind the need for a transition to a more sustainable, circular economy.

The episodes discuss how the current linear economic model, based on a 'take-make-waste' approach, is leading to unsustainable levels of consumption and waste, and how a shift toward a circular economy that reuses and recycles resources could help address this problem.

The episodes also explore policy solutions and economic theories, such as the 'doughnut economy', that aim to prioritize environmental protection and sustainable development over traditional measures of economic growth.