Mortality rates have fallen dramatically over time, starting in a few countries in the 18th century, and continuing to fall today. In just the past century, life expectancy has increased by over 30 years. At the same time, mortality rates remain much higher in poor countries, with a difference...

People in poor countries live shorter lives than people in rich countries so that, if we scale income by some index of health, there is more inequality in the world than if we consider income alone. Such international inequalities in life expectancy decreased for many years after 1945, and the...

In this paper, we use improved techniques and updated data from Taiwan to see if, after all, it is possible to tell a story in which demographic change has large effects on saving. We do this, not because we have any reason to revise our previous empirical results-indeed they are replicated on...

This paper is concerned with the measurement of the relative poverty of people in different age groups in developing countries. In many instances it is useful to know, for example, whether a higher fraction of children are in poverty than are adults. However, it is difficult to make even simple...