This blog addresses key areas of unsustainable practice within the global economy including the degrading of environmental assets, extreme income and wealth inequalities, green house gas emissions and climate change, and financial market disfunction.  If these practices are unsustainable they must at some point end, which will be considerably more harmful to people if no attempt has been made to reform the economy first.  This blog looks to explore the radically different nature of a sustainable economy to the one currently have and considers the how a rapid economic transformation might be achieved.  It recognises that economic activities are first and foremost governed by the laws of physics and that transformation takes time and energy.  As such is informed by ecological economic understanding.  It also looks to address the root causes of problems rather than their symptoms.  The opportunity for small incremental change to address unsustainable practice has passed.  Fundamental change of the economic system is now a humanitarian necessity which will require sacrifice and change by all, both in action and mindset.