2008 paper by researchers from Harvard, MIT and Northwestern University on the potential effect of climate change on nations' economic growth.
2010 study by Stanford University that seeks to quantify the effects of fertilizers and higher crop yields on greenhouse-gas emissions.
2010 study by Nature Conservancy Center for Science and Public Policy on depletion across 18 Arizona watersheds and possible mitigation strategies.
2008 UC Santa Barbara and the University of Hawaii study on the effects of catch-share systems and their potential to reduce overfishing.
2009 study by the Harris School of Public Policy on the effects of participation in the Food Stamp program on recipients' health
2010 study looking at the potential effects on children's diet of putting nutrition information on fast food items.
2008 Center for Economic Studies paper on the effects of federal food safety regulations and private actions on the cost of meat and poultry processing.
2009 Tufts University study on the relationship between household tobacco use and child nutrition in the developing world.
2008 paper by Harvard University, Oregon State University, and the U.S. Department of Agriculture on the economic and policy drivers of national land-use change.
2008 review by the Harvard Family Research Project of available research on the relative benefits and required factors for success of after-school programs.