Introduction to Becker-Posner blog -- Sex and population -- The sexual revolution -- Gay marriage -- Polygamy -- Sex selection -- Immigration reform -- Putin's population plan -- Afterthoughts to part I -- Property rights -- Kelo and eminent domain -- Pharmaceutical patents -- Grokster, file sharing, and contributory infringement -- Orphan drugs, intellectual property, and social welfare -- Organ sales -- Traffic congestion -- Privatizing highways -- Afterthoughts to part II -- Universities -- Plagiarism -- Tenure -- For-profit colleges -- Ranking higher education -- Afterthoughts to part III -- Incentives -- Fat tax -- Trans fats ban -- Libertarian paternalism -- Chicago and big boxes -- Afterthoughts to part IV -- Jobs and employment -- Judicial term limits -- Economics of the revolving door -- CEO compensation -- Income inequality -- Corporate social responsibility -- Afterthoughts to part V -- Environment and disasters -- Tsunami -- Major disasters -- Federalism, economics, and Katrina -- Post-catastrophe price gouging -- Global warming and discount rates -- Efficient water conservation -- Afterthoughts to part VI -- Crime and punishment and terrorism -- Capital punishment -- Doping athletes -- Drunk driving -- Internet gambling -- Preventive war -- Ethnic profiling -- Privatizing security -- Antiterrorism allocations -- Collective punishment -- Afterthoughts to part VII -- The world -- Economic and political freedom -- Size of countries -- Hamas, Palestine, and democracy -- Google in China -- Economics of national culture -- Microfinance and development -- World inequality -- Foreign aid -- Afterthoughts to part VIII.