Understanding international differences in the emissions intensity of trade and production is essential to understanding the effects of greenhouse gas limitation policies. We develop data on emissions from 41 industrial sectors in 39 countries and estimate the CO2 emissions intensity of...

This paper examines the accumulation of physical capital versus knowledge (R&D) capital as a determinant of advanced countries’ comparative advantage. I show that advanced countries are abundant in R&D resources, specialize in knowledge-intensive stages of high-technology industries, and...