An issue of major concern to politicians and policy-makers around the world today is whether transport infrastructure investments, such as those in roads and airports, generate enough economic benefits to justify their very large price tag. Beginning in the mid 1970s, nearly all OECD countries...

National and international expansion of transmission networks and diminishing returns to scale in hydropower capacity expansion has raised the opportunity cost of electricity. The resulting changes in comparative advantage between industries have in many countries been counteracted by government...