Abstract: This paper reviews different approaches to the political and economic control of global public goods like global warming. It compares quantity-oriented control mechanisms like the Kyoto Protocol with price-type control mechanisms such as internationally harmonized carbon taxes. The pros and cons of the two approaches are compared, focusing on such issues as performance under conditions of uncertainty, volatility of the induced carbon prices, the excess burden of taxation and regulation, accounting finagling, corruption, and implementation. Although virtually all policies involving economic global public goods rely upon quantitative approaches, price-type approaches are likely to be more effective and more efficient.