فارغ التحصیلان IT86 دانشگاه صنعتی شاهرود

Greenest Countries - Most Livable Places 2008

http://www.photius.com/rankings/greenest_countries_2008.html

 SOURCE: Reader's Digest

 RS built the green and livable index from the United Nations 2006 Human Development Indicators (HDI) data and the 2005 Environmental Sustainability Index (ESI). More detail follows the ranking table.*

 The HDI examines national quality of life and doesn’t merely focus on per-capita income. It takes into account information on life expectancy, educational attainment and national per capita income. The ESI index is based on a collaboration between Yale University and the Center for International Earth Science Information Network at Columbia University, and the World Economic Forum. It tracks a diverse set of indicators that influence environmental sustainability at the national level. For 141 nations, the database offers information on 76 different variables organized into 21 sustainability categories. RD included information on 13 of these 21 categories in our index. Six of the thirteen categories have a direct effect on a nation’s daily environmental quality of life, such as air and water quality. The remaining seven categories are key indicators of whether a nation is a good regional and global “citizen” in not exacerbating environmental challenges. Such a nation does not contribute to regional problems such as acid rain, and on the important issue of climate change, has a small ecological footprint and produces relatively few greenhouse gases. A good global citizen also protects biodiversity located within its physical borders. To construct a national ranking based on a nation’s HDI score and on its scores on each of these thirteen categories, RD first took all fourteen scores and standardize them into comparable units, then gave the HDI index a weight of 50%, and the subset of ESI variables received a weight of 50%. We weighed each ESI variable equally so each of the thirteen indicators receives a weight of (1/26). Sorting this overall score provides the ranking.

NOTE: The information regarding greenest, most livable countries 2008 on this page is re-published from Reader's Digest. No claims are made regarding the accuracy of Most green and livable countries 2008 information contained here. All suggestions for corrections of any errors should be addressed to Reader's Digest.