Lok Sang Ho is professor of Economics at Lingnan University in Hong Kong. He holds a PhD in Economics from the University of Toronto and has worked in the Ontario Government as well as academia. Much of his research has focused on housing and the macro economy, with articles published in Pacific Economic Review, Contemporary Economic Policy, Journal of Real Estate Finance and Economics, Journal of Housing Economics, Economists' Voice, Urban Studies and other publications. Since he published his article on the "World Currency Unit" in World Economy, he has been working to perfect this "indexed unit of account." Daily quotations of this unit in alternative currencies is now available at http://www.ln.edu.hk/cpps/wcu/index.htm (http://www.ln.edu.hk/cpps/wcu/index.htm). He argues that commodity prices should be quoted in this "indexed unit of account," which represents a unit of global real purchasing power, rather than the US dollar. His earlier article in World Economy argues that having bonds denominated in the World Currency Unit will improve the efficiency of global capital markets as it will make real interest rates more transparent. He has published a number of books, including Principles of Public Policy Practice, Exchange Rate Regimes and Macroeconomic Stability(both from Kluwer Academic Publishers); China, Hong Kong, and the World Economy (joint editor, Palgrave-Macmillan, 2006). He was president of the Hong Kong Economic Association 1999-2007.