Previous Work

Environmental Performance Index Work

2010	EPI: http://www.epi2010.yale.edu/

2008	EPI: http://epi2008.yale.edu

2006	Pilot EPI: http://www.yale.edu/epi/2006epi.htm

Environmental Sustainability Index Work (predecessor to the EPI)

2005	ESI: http://sedac.ciesin.columbia.edu/es/esi/

2000 - 2002

ESI materials: http://sedac.ciesin.columbia.edu/es/esi/archive.html

Towards a China Environmental Performance Index

2011	Towards a China Environmental Performance Index: http://envirocenter.yale.edu/chinaepi

Exploring Trade and the Environment:
An Empirical Examination of Trade Openness and National Environmental Performance

2010	http://envirocenter.yale.edu/programs/environmental-performance-management/exploring-trade-and-the-environment