The Anasazi of southwestern North America (environmental damage and climate change) The Maya of Central America (environmental damage, climate change, and hostile neighbors) Finally, Diamond discusses three past success stories: The tiny egalitarian Pacific island of Tikopia The agricultural success of egalitarian central New Guinea The forest management in stratified Japan of the Tokugawa-era, and in Germany. Part Three examines modern societies, including: The collapse into genocide of Rwanda, caused in part by overpopulation The failure of Haiti compared with the relative success of its neighbor on Hispaniola, the Dominican Republic The problems facing a developing nation, China The problems facing a First World nation, Australia Part Four concludes the study by considering such subjects as business and globalization, and "extracts practical lessons for us today" (pp. 22–23). Specific attention is given to the polder model as a way Dutch society has addressed its challenges and the "top-down" and most importantly "bottom-up" approaches that we must take now that "our world society is presently on a non-sustainable course" (p. 498) in order to avoid the "12 problems of non-sustainability" that he expounds throughout the book, and reviews in the final chapter. The results of this survey are perhaps why Diamond sees "signs of hope" nevertheless and arrives at a position of "cautious optimism" for all our futures. The second edition contains an Afterword: Angkor's Rise and Fall. Reviews Tim Flannery gave Collapse the highest praise in Science, writing: The Economists review was generally favorable, although the reviewer had two disagreements. First, the reviewer felt Diamond was not optimistic enough about the future. Secondly, the reviewer claimed Collapse contains some erroneous statistics: for instance, Diamond purportedly overstated the number of starving people in the world. University of British Columbia professor of ecological planning William Rees wrote that Collapses most important lesson is that societies most able to avoid collapse are the ones that are most agile, able to adopt practices favorable to their own survival and avoid unfavorable ones. Moreover, Rees wrote that Collapse is "a necessary antidote" to followers of Julian Simon, such as Bjørn Lomborg who authored The Skeptical Environmentalist. Rees explained this assertion as follows:<ref>William Rees, "Contemplating the abyss", Nature, volume 433, 6 January 2005, pages 15-16.</ref> Jennifer Marohasy of the coal-mining backed think-tank Institute of Public Affairs wrote a critical review in Energy & Environment, in particular its chapter on Australia's environmental degradation. Marohasy claims that Diamond