The author identifies three principal economic phenomena, which are explained: long run productivity growth as the central driver of increasing economic activity, short-term and long-term debt cycles. The latter two are explained to some detailed with reference to money creation, central banking and long term crisis tendencies. With regards to the long run debt cycle, which leads into deleveraging and recession, some policy measures which can smoothen the crisis are discussed. 2013 Level: beginner How The Economic Machine Works Ray Dalio Bridgewater Associates In this keynote speech, Roger Backhouse gives a historical overview of theories on secular stagnation: how it evolved from a description of the economic situation, especially in the U.S. of the 1930s to an analytical tool and then lost importance until its current revival. Backhouse touches upon the contributions of J. A. Hobson, Alvin Hansen, Evsey Domar and Paul Samuelson. 2015 Level: advanced Theories of stagnation in historical perspective Roger Backhouse IMK The world is coping with a global disaster, as the new Coronavirus takes a toll on many lost lives and a severe impact on economic activity. To provide a long-run perspective, this column documents the international response to a variety of disasters since 1790. Based on a new comprehensive database on loans extended by governments and central banks, official (sovereign-to-sovereign) international lending is much larger than generally known. Official lending spikes in times of global turmoil, such as wars, financial crises or natural disasters. Indeed, in these periods, official capital flows have repeatedly surpassed total private capital flows in the past two centuries. Wars, in particular, were accompanied by large surges in the volume of official cross-border lending. 2020 Level: advanced Coping with disasters: Lessons from two centuries of international response Sebastian Horn, Carmen Reinhart, Christoph Trebesch VOX CEPR Policy Portal