What is sustainability?

a) Definitions of sustainability: There are many definitions of “sustainability.” The most commonly used definition is from the UN Brundtland Report. Please read definitions at: http://www.ecy.wa.gov/sustainability/more_defns.htm
b) Introduction to sustainability: please read “Introduction to Sustainability” at http://www.sustainablemeasures.com/Sustainability/ and then at bottom of this web page click on “An even Better Picture of a Sustainable Community,” or on this direct link: http://www.sustainablemeasures.com/Sustainability/ABetterView.html