The Belt and Road Initiative, due to its diverse and extensive infrastructure investments, poses a wide range of environmental risks. Some projects have easily identifiable and measurable impacts, such as energy projects' greenhouse gas emissions. Others, such as transportation infrastructure,...

This paper estimates the effects of airports on economic growth in US metropolitan areas. The estimation uses a novel technique to identify the effects of changes in local airport sizes from overall changes in the air travel network. Airport size is found to have a positive effect on local...