Is it possible that the utility maximizing behavior leads the mankind to destruction? We develop a model with optimal pollution and optimal population in which population growth rate decreases along with pollution. We study if the optimal path is demographically sustainable, i.e. if it can...

In this model of North and South economies, growth is driven by Schumpeterian R&D and by accumulation of two types of human capital, versatile and specialized. The former is school intensive while the latter is on-the-job-training intensive. Growth is endogenous and independent of scale effects....

We simulate a two period olg-model with heterogeneous agents. Parents receive utility from quantity and quality of their offspring. Generating a trade-off between the former and the latter, an increasing wage rate leads to higher opportunity costs, lower fertility, and higher quality of the...

The ratio of retirees to workers in developed countries is expected to increase sharply in the next few decades. In the presence of unfunded income support policies, this increase in old age dependency is expected to increase the future fiscal burden which is seen as a threat to living...

Foreign investment and the activity of foreign firms can have a substantial effect on an economy. This study examines the short run and long run effects of the movement of locally owned firms from a developed country to an undeveloped country on the output and growth rate of each in the presence...

This paper builds a model of growth through industrialization, where machines replace workers in a growing number of tasks. This enables the economy to experience long-run growth, as machines become servants of humans, and as their number grows unboundedly. The mechanism that drives growth is...