Abstract:
The Guide to Global Population Projections discusses who makes projections and how, and the key assumptions upon which they are based, drawing on new practices and new thinking on uncertainty, methodology, and the likely future courses of fertility and life expectancy. Methodology and recent results from prominent institutions are also compared. A guide to other sources of demographic information,
... pointers to projection results, and an entry point to key literature in the field are also provided. The guide is produced in collaboration with the Brown University Watson Institute for International Studies and Center for Environmental Studies, and Population Studies and Training Center, and the Columbia University Center for International Earth Science Information Network (CIESIN).
The purpose is to provide a guide to global population projections. 
