William Baumol and his co-authors have analyzed the impact of differential productivity growth on the health of different sectors and on the overall economy. They argued that technologically stagnant sectors experience above average cost and price increases, take a rising share of national...

A carbon tax would improve fiscal sustainability in the United States according to William Nordhaus of Yale University. There is no better fiscal instrument to employ at this time, in this country, and given the fiscal constraints the government faces.