(February 2014, 97 pages, 25 MB PDF). Produced every two years by a research team from the Yale Center for Environmental Law and Policy and CIESIN, Columbia University, the EPI ranks country performance on high-priority environmental issues in two broad policy areas, protection of human health from environmental harm, and protection of ecosystems. The EPI this year evaluated 178 countries, with new additions, in large part, from Small-Island Developing States and sub-Saharan Africa.