What happens when capital flows all of a sudden stop and begin to reverse? From 2000 to 2008, one half of Europe (the PIIGS) received huge capital inflows from the other half as well as from overseas. In 2009, there was a sudden stop and a capital-account reversal, followed by an economic crisis. But, we've been here before. In a post at VOX, Oliver Accominotti and Barry Eichengreen compare this recent sudden stop to a similar episode which occurred in Europe in the late 1920s. The working paper on which this post is based can be found here. Hat tip - Chris Colvin.
The Berkeley Earth Project , an independent study of global warming, has found that the earth has become a degree warmer over the past half century. However, the statistical uncertainty surrounding pre-1920 estimates makes it very hard to say much about long-term trends - click here for graph . This is one of my concerns with the global warming debate - we simply don't have trustworthy long-run data which looks at temperature changes over the last millennium (or two). My second concern with the global warming debate is that it is very hard to prove any sort of casual link between global warming and human activity. The scientists may be able to show correlation between global warming and our production of carbon dioxides etc., but correlation is not causation. My third concern with the debate is that those who are sceptical or agnostic are stereotyped as flat-earthers or intellectually-challenged crackpots. This only stifles debate and the progress of science itself.