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Environmental Performance MeasurementEnvironmental Sustainability Index

The Environmental Sustainability Index (ESI) is a composite index tracking socio-economic, environmental, and institutional indicators that characterize and influence environmental sustainability at the national scale. It was launched in 1999 by Professor Daniel C. Esty in cooperation with Columbia University's Center for International Earth Science Information Network (CIESIN) and the World Economic Forum's Global Leaders for Tomorrow Environment Task Force.

The 2005 ESI report, published at the World Economic Forum’s Annual Meeting in Davos, Switzerland, ranked 146 countries with regard to the environmental sustainability of their past, current, and projected socio-economic and institutional development trajectories. The ESI, as a precursor to the Environmental Performance Index, helped demonstrate new conceptual hypotheses concerning the drivers of successful environmental protection.

More information on the ESI is available at http://epi.yale.edu/previous-work.

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