Here is the simple basics of worldwide economic crisis explained by this year's Nobel Prize winner in Economics , the New York Times columnist Paul Krugman: What is the nature of the crisis? The details can be insanely complex, but the basics are fairly simple. The bursting of the housing bubble has led to large losses for anyone who bought assets backed by mortgage payments; these losses have left many financial institutions with too much debt and too little capital to provide the credit the economy needs; troubled financial institutions have tried to meet their debts and increase their capital by selling assets, but this has driven asset prices down, reducing their capital even further. What can be done to stem the crisis? Aid to homeowners, though desirable, can’t prevent large losses on bad loans, and in any case will take effect too slowly to help in the current panic. The natural thing to do, then — and the solution adopted in many previous financial crises — is to deal with...