Sound public policy addresses externalities directly, when possible. Air pollution is best alleviated by policy instruments that internalize the social cost of pollution, making it attractive to reduce emissions. One such instrument might be a tax levied on individual emissions, if they are...

Charging for social marginal costs is efficient regardless of price elasticities, but the importance of getting prices"right"is greater the more manageable, or elastic, the demand. In efficient pollution control programs, options to make cars cleaner are combined optimally with demand...

Except for two relatively minor statutes, U.S. environmental laws do not permit the balancing of costs and benefits in setting environmental standards. The Clean Air Act, for example, prohibits the Environmental Protection Agency (EPA) from considering costs in setting ambient air quality...

Larsen and Shah present evidence on the level of fossil fuel subsidies and their implications for carbon dioxide emissions. They conclude that substantial fossil fuel subsidies prevail in a handful of large, carbon-emitting countries. Removing such subsidies could substantially reduce national...

The Venezuelan government and PDVSA (Venezuela's state oil companies) are both exposed to oil price instability. Given the existing tax structure, PDVSA has a higher exposure than the government, especially when prices drop below $18-20 a barrel. The authors show that the volatility of prices...

The Amazon region has been responsible for a major share of Brazilian gold production in recent years. The region has witnessed a sizable gold rush comparable only to the California gold rush last century. The gold rush has spawned a powerful informal mining sector and has attracted many people...

The literature on the theory of the firm is rich in theoretical and practical insights. The key messages in this overview are the following: (a) the modern theory of the firm provides many insights into political organization, for political jurisdictions can be viewed as pseudo-firms that...

The authors argue that further moves to liberalize trade and to implement existing GATT rules and principles may have a greater impact on global competition than would the pursuit of harmonization of competition policy. They also suggest that current GATT rules and case law provide scope for...

Why does income inequality differ among countries? Using a sample of 80 countries from the 1980s, the author shows that two types of factors explain variations in income inequality. The first are factors that are, in the short term, independent of economic policies and are included in the...

Price and income elasticities estimated from a country's export demand function are used both to predict and to prescribe effective export strategies. But the focus on elasticities has led to the neglect of an important empirical regularity: a strong persistencein the growth rate of a country's...