It's overconsumption, not population growth, that is the fundamental problem: By almost any measure, a small portion of the world's people — those in the affluent, developed world — use up most of the Earth's resources and produce most of its greenhouse gas emissions.
Read more by Fred Pearce:
http://e360.yale.edu/content/feature.msp?id=2140
Also read:
David Satterthwaite, "The Implications of Population Growth and Urbanization for Climate Change," Environment and Urbanization, vol. 21, no. 2, 2009. Satterthwaite pages 545-567
