The World Bank eLibrary is a collection of the World Bank’s numerous publications, reports, working papers and other related documents. All texts are searchable by both topic and region, and available in full-text.Center for International Development at Harvard
In particular, check out PAIS and Sustainabilty Science Abstracts (go to "select databases," then go to "Environmental . . ." and then click on the " plus sign and click on "Sustainability Science Abstracts").