3 pillars of sustainability

Environmental sustainability is defined as meeting the needs of the present without compromising the ability of future generations to meet their needs. This encompasses keeping population densities below the carrying capacity of a region, facilitating the renewal of renewable resources, conserving and establishing priorities for the use of non-renewable resources, and keeping environmental impact below the level required to allow affected systems to recover and continue to evolve.
— United Nations


  1. Read 211-212 Patterns & Change
  2. Define environmental sustainability. Comment on how the concept can be applied differently.
  3. Present one of the following examples of environmental sustainability to the class (< 5 mins)
    • Sustainable Cities (212-213)
    • Sustainable Tourism (213-214)
    • National Parks and Protected Areas (214-215)
    • Environmental Performance Index (EPI) (215-216)
    • Development and Environmental Sustainability (217)

the environmental performance index (EPI)


how is the epi measured?

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personal research

  1. Explore the issues and methods page of the EPI website.
  2. Add information about what it measures and why it is included around the EPI wheel.

EPI country comparison

Click on the image to access the country comparison tool. Compare two countries and report back to the class.