The evidence continues to mount. As our industrial economy continues to dump large amounts of carbon into the atmosphere, we are affecting the atmospheric chemistry of the global climate. This has led prominent physicist and climate scientist James Hansen to reach the “startling conclusion”...

We introduce a tractable model of post-retirement saving behavior in which households have a precautionary motive arising from uninsured health status risks. The model distinguishes between annuitized and non-annuitized wealth, emphasizes the importance of asset composition in determining...

This paper presents a model in which a country's measured average propensity to save endogenously rises when its economy industrializes. The model has agricultural and manufacturing sectors. Only agriculture uses land. If at early dates income per capita is low, agricultural consumption is...

This paper analyzes the very long run, or "stationary state," impact of an unfunded social security system, using an overlapping generations mo del framework. A key feature is that while parents care about their c hildren and can leave non-negative bequests to them, children also ca re about...

Economists make extensive use of two separate descriptions of private saving behavior: the life-cycle (or overlapping generations) model, and models with intergenerational altruism. Analysis of the two frameworks is quite different, as are many of the long-run policy implications. This paper...

This article constructs a decentralized growth model with two production sectors, one having competitive firms and the other oligopolists. Since capitalized pure profits for the latter sector constitute an asset which household savings must finance, we show that imperfect competition can reduce...