Secular stagnation is where economic growth is persistently negligible or very low. The first notable economist to talk about secular stagnation was Alvin Hansen, who argued in the late 1930s that economic growth in the US was low and would remain low due to declining population growth and declining technological innovation. The post-war baby and technological booms meant that people largely forgot about Hansen's theory. However, in the light of low economic growth and near-zero real interests which have persisted since 2008, Larry Summers and others have revived the secular stagnation hypothesis - click here and here. In the video below, Oxford's Kevin O'Rourke gives a lecture to the British Academy entitled "Economic Impossibilities For Our Grandchildren?" which addresses the secular stagnation hypothesis and prescribes various policies to address it. A working paper version of his lecture is available here.
As an undergraduate, I was taught about the failure of Herstatt Bank in 1974 and Herstatt risk. This bank was only the 35th largest bank in Germany at the time so why would anyone be interested in studying its failure? Herstatt failed because of its involvement in risky foreign exchange business. When it closed its doors on 26 June 1974, counterparty banks (mainly in New York) had not received dollars due to them because of time-zone differences - this is known as settlement risk. The cross-jurisdictional implications of its failure resulted in the Bank for International Settlements setting up the Basel Committee on Banking Supervision and Herstatt's failure was a key reason for the establishment of real-time gross settlements systems, which ensures that payments between two banks are executed in real time. The Bank of England's Ben Norman has an interesting post on Herstatt over at the Bank's new blog ( Bank Underground ). As well as giving an excellent overview of