Smog is sharply declining in growing cities. This suggests that emissions per mile of driving is declining faster than overall vehicle mileage is growing. This paper analyzes emissions for over 24,000 vehicles tested at random between 1997 and 1999 in California's Random Roadside Emissions...

Even among developed countries, each country has very different circumstances and political institutions regarding environmental issues. Moreover, the differences in individual attitudes about environmental issues within national borders and in the types of environmental behaviors affect the...