Sustainability definitions and metrics from various sources:
- EPA definition of sustainability
Sustainability creates and maintains the conditions under which humans and nature can exist in productive harmony, that permit fulfilling the social, economic and other requirements of present and future generations.
http://www.epa.gov/sustainability/basicinfo.htm
- World Population
projected to 2050 in both developed and developing countries
http://blog.world-mysteries.com/science/the-world-population/
- Human carrying capacity
When discussing human populations, the carrying capacity often refers to the number of number of individuals that the Earth could hold at different standards of living and levels of resource consumption.
http://www.eoearth.org/article/Carrying_capacity Ecological Footprint Analysis and global hectare Definition, and graphs
The Ecological Footprint is defined as "the area of productive land and water ecosystems required to produce the resources that the population consumes and assimilate the wastes that the population produces, wherever on Earth the land and water is located."The total “footprint” for a designated population’s activities is measured in terms of ‘global hectares.’ A global hectare (acre) is one hectare (2.47 acres) of biologically productive space with an annual productivity equal to the world average. Currently, the biosphere has approximately 11.2 billion hectares of biologically productive space corresponding to roughly one quarter of the planet’s surface.
http://www.sustainablescale.org/conceptualframework/understandingscale/measuringscale/ecologicalfootprint.aspxEcological Footprint Graph
Per Capita footprint for both high income areas and low income areas
Energy Consumption
Footprint by region and population size
What is used to measure ecological footprint
http://www.footprintnetwork.org/en/index.php/GFn/page/footprint_basics_overview/- Keeling Curve
http://planetforlife.com/co2history/index.html Current Global Carbon Dioxide levels and where we need to be
http://www.350.org/sites/all/files/chart.pngWorld Game Statement
www.Geni.orgOur Common Future: Definition of Sustainability
http://en.wikipedia.org/wiki/Our_Common_Future- Most Sustainable Companies
http://sustainabilityadvantage.com/2011/04/05/5-lists-of-the-most-sustainable-companies/
- Sustainable Cities Network
http://www.sustainablecitiesnet.com
- Sustainable indicators
http://www.sustainablemeasures.com/indicators
- SDRSP Metrics Task Force — Community Sustainability Metrics List
http://www.wrsc.org/documents?term_category=703&term_scale=All&number_stars=&term_created=&term_created=&number_stars=&sortoptions=rating
- Articles on Sustainability Metrics
http://scholar.google.com/scholar?q=sustainability+metrics&hl=en&as_sdt=0&as_vis=1&oi=scholart
- Ecological Footprint
http://www.cambridgenow.ca/newsarchives/archivedetails.cfm?id=2163
