1. See, for example, Scott Sernau, Global Problems: The Search for Equity, Peace, and Sustainability (Boston: Pearson [Allyn and Bacon], 2006), part three, chapter 10.
2. UN Population Division, Long Range Population Projections: Based on 1998 Revision (New York: UN Population Division, 2000).
3. Paul Ehrlich, The Population Bomb (New York: Ballantine Books, 1968);
4. Gordon Conway, The Doubly Green Revolution and Food for All in the Twenty-First Century (Ithaca. NY: Comstock Publications. 1998).
5. The Green Revolution is not without critics who consider it an unmitigated disaster for local agriculture, environments, and small farmers; see, for example, Vandana Shiva, The Violence of Green Revolution: Third World Agriculture, Ecology, and Politics (London: Atlantic Highlands, 1991).