The majority of the world's population will live in cities in the next few years and the pace of urbanization worldwide will continue to accelerate over the coming decades. While the number of megacities is projected to increase, the largest population growth is expected to be in cities of less than one million people. Such a dramatic demographic shift can be expected to have an impact on popul...

☆ The views expressed in this paper are our own and views or policies of the International Monetary Fund. W Lant Pritchett, DanWood, and to seminar participants at theWorld Bank, the IFPRI/Cornell conference on thresho growth and development, the AEA 2006 Annual Meeting for helpful comments and suggestions. Any errors are s ⁎ Corresponding author. Research Department, In Washington, DC 20431, U...

mating pooled measures because of heterogeneity of studies’. This poor old clinician had difficulty interpreting such pooled measures and believed it was far preferable simply to look at the data. Included here is a table 1 , which I constructed (from their tables 1 and 2) that summarizes to me their major epidemiologic findings. Prevalence day was presumably in the last of the cited study year...

Lucas Engelhardt 1 does not point out anything incorrect in my “Capital-Based Theory of Secular Growth” (2009). Rather, he implicates me in a violation of Occam’s razor. My discussion of nonrivalry, external effects, and intangible capital contains, but obscures, the fundamental ingredient for secular growth: nondepreciating capital. Engelhardt purports to demonstrate how nondepreciating capita...

As noted by Charles Redman and Nancy Jones in the background paper, rapid urbanization brings opportunities to new urban developments. But urbanization also comes with serious loss of arable land, degradation of ecosystems as well as social and environmental changes to the urban populations. The current urbanization process in developing countries is indicative of a process that needs considera...

Materials from this book may be reproduced provided Population Action International and the authors are acknowledged as the source. Summary For more than a decade, since the 1986 release of a seminal report by the U.S. National Research Council, discussion of the impact of population growth on economic change in developing countries has languished within both the demographic and economic fields...

The growth rate of Medicare enrollees significantly exceeds the growth rate of the general population. Moreover, the group of enrollees aged 85 years or over is growing proportionately faster than all other groups of the aged. These phenomena and other interesting trends of the Medicare population are explored in this article.

An eco-evolutionary feedback loop is defined as the reciprocal impacts of ecology on evolutionary dynamics and evolution on ecological dynamics on contemporary timescales. We experimentally tested for an eco-evolutionary feedback loop in the green peach aphid, Myzus persicae, by manipulating initial densities and evolution. We found strong evidence that initial aphid density alters the rate and...

"The purpose of this [one-page] note is to empirically investigate the impact of geographic after-tax real income differentials on geographic population growth rate differentials. The focus is on population growth rates in Florida's 67 counties over the period 1980-88." The authors conclude that "even after allowing for a variety of other location-influencing factors, including coastal access...

ibn khaldun has played a major role in the shaping of pre-modern population theories. he has proposed some important issues and perspectives on the interaction of population dynamics and development. thus, this paper attempts to explore ibn khaldun’s demographic perspectives and identify his approach to population and development interrelationship. the results indicate that ibn khaldun has intr...