The latest Longevity Meme article is excerpted from Ramez Naam's More Than Human; a compact examination of the likely future of population in the light of advancing healthy life extension technologies. "How will longer lives affect world population? Certainly anything that keeps people alive longer will increase the number alive at any given point. However, the details of population growth can be rather counterintuitive. Consider that today the countries with the longest life expectancies at birth have populations that are remaining steady or even shrinking. ... If the developing world can attain the present level of affluence of the developed world by 2050, we'll see overall world population level out and begin to drop."
Link: http://www.longevitymeme.org/articles/viewarticle.cfm?article_id=25&page=1