A global currency refers to the idea of a world monetary system. According to CBS News, the euro, yen, American dollar and other world currencies would "succeeded by" a global currency and countries would exchange their money for the new currency. In early September 2009, this was outlined in a report from the United Nations Conference on Trade and Development. The global currency would be overseen by a Global Reserve Bank.http://www.cbsnews.com/blogs/2009/09/09/taking_liberties/entry5298305.shtml