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...

This paper presents new evidence on the formation of producer prices. The database combines a one-time survey that was conducted in June 2004 on a sample of 1,200 firms in manufacturing and time-series information on price adjustment of the same firms from a business-tendency survey. The share...