In the first decade of the 21st century we saw financial markets collapse, sudden spikes in food prices and projections of major environmental impact from climate change. All pose serious challenges to the global economic and financial systems. Economist and Nobel prize winner Amartya Sen along with leading experts in the field discuss re-thinking the social, economic and political systems we have in place today. This material forms part of The Open University course DD309 Doing economics: people, markets and policy.