United Nations
Unpi: World Population Ageing 1950 2050 [Pdf]
Graphically displays the growth of the world's population with projections for 2050. Study's changes in such statistics as median age for particular countries, age demographic shifts, and the disparity between "developed" and...
Other
Rockefeller University: Human Population Dynamics
Mathematically attempts to model human population growth in order to discuss whether the population will skyrocket or level off long before it doubles.
Christian Science Monitor
Christian Science Monitor: Population Decline in Sight
This Christian Science Monitor article notes the projections of a UN Conference of March 2001, predicting that fertility rates worldwide are decreasing, and population decline is in sight.
Population Connection
United Nations Population Fund
This resource attempts to assist developing countries manage their population problems.
Trinity University
Trinity University: Demography
Trinity University offers interesting statistics on the world's population; such as ethnicity, education, religion, gender, etc. Includes special links.