City Living, The Solutions Journal, Volume 1, Issue 3, May 2010, Pages 8-9 ( Abstract: The development of megacities has been championed by the World Bank and some environmentalists as the most efficient way to shepherd the Earth's resources as world population increases. However, a study in the March 2010 issue of the journal Nature Geoscience argues that the drivers of tropical deforestation have shifted in the early 21st century from subsistence agriculture to the growth of cities and globalized agricultural trade. The report finds that tropical countries like Brazil, Indonesia, and Cambodia have been supplying increasing amounts of palm oil, soybeans, sugar, meat, and other processed products for export. Not all the products are used for food; palm oil and sugar in particular are also being converted into biofuels. As small farmers within tropical nations move away to become city dwellers, they may actually come to use more resources from the countryside. "Collectively, these results indicate a shift from state-run road building and colonization in the 1970s … Topics: Environment; Forests; Urbanization