More than 20 years after the first International Conference on Nutrition (ICN), the second ICN (ICN2) cannot use a “business as usual” approach. The world has profoundly changed and nutrition has profoundly changed, as nutrition is now recognized as being multi-sectoral, multi-level, multi-stakeholder and multi-disciplinary. There is demand from countries for practical tools, guidelines, and sh...

We examine the effects of technology on productivity growth by disaggregating total output into sectoral components, exploring the roles of investment and technology on productivity growth for countries in different income groups. We find that for low-income countries, investment is the most important determinant of productivity growth. While investment plays an important role in determining pr...

The US Global Change Research Program has initiated a National Assessment of potential impacts from climate change. This paper summarizes the National Assessment process, and the Mid-Atlantic Regional Assessment (MARA) as an example of how the process is being implemented. At the national level, 5 sectoral working groups are assessing impacts on agriculture, forests, freshwater resources, coast...

Clinically the presence of nerve fibre bundle defects in glaucoma and non-glaucomatous lesions, and altitudinal or vertical hemianopias in pre-chiasmal lesions has been known for a long time. These suggest a sectoral lesion in the optic nerve or retina. In the majority of such cases, no retinal lesion is seen to account for these visual field defects. It has been presumed that the lesion lies i...

This paper applies current theory concerning the impact of irreversibility of investment, in order to test for the impact of uncertainty on investment expenditure for a middle income country. The contribution of the paper is unique in two respects. First, it employs dynamic heterogeneous panel estimation techniques not previously applied to investment functions. Second, it explicitly tests for ...

The goal of the Harvard Project on International Climate Agreements is to help identify key design elements of a scientifically sound, economically rational, and politically pragmatic post-2012 international policy architecture for global climate change. It draws upon leading thinkers from academia, private industry, government, and non-governmental organizations from around the world to constr...

I analyze how antitrust law and sectoral regulatory rules should be applied to network industries. I first identify a number of relevant features of network industries that may affect the way in which antitrust law and regulatory rules should be applied. These relevant features include (among others) network effects, market structure, market share and profits inequality, choice of technical sta...

I quantify the contribution of sectoral shocks to business cycle fluctuations in aggregate output. I develop and estimate a multi-industry general equilibrium model in which each industry employs the material and capital goods produced by other sectors. Using data on U.S. industries’ input prices and input choices, I find that the goods produced by different industries are complements to one an...