Class25

Class25 - Chem 83 Class25 1 Sustainability Sustainability...

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Unformatted text preview: Chem 83 Class25 1 Sustainability Sustainability is meeting the needs of today's society without compromising the ability of future societies to meet their needs. ( Brundtland, G. H., et al. Our Common Future: Report of the World Commission on Environment and Development. Oxford: Oxford University Press, 1987.) What factors affect sustainability? In 1973 Roger Gymer suggested three factors Population (how many consumers?) AfFuence (how much is consumed by each person?) Use of imperfect technologies (what are the negative impacts of each technology on resources, humans, environment, and other life forms?) Gymer, Roger G.,"Chemistry: An Ecological Approach", NY, Harper & Row, 1973, 756 Chem 83 Class25 2 http://maps.grida.no/go/collection/vital-waste-graphics-2 (US, UK) (Russia, Cuba, Mexico) The answer depends on level of consumption (affluence): Economies are divided by the World Bank using 2006 mean annual income as follows: low income , $935 or less; lower middle income , $936 - $3,705; upper middle income , $3,706 - $11,455; and high income , $11,456 or more. http://web.worldbank.org/WBSITE/ EXTERNAL/DATASTATISTICS/ 0,,contentMDK:20420458~menuPK: 64133156~pagePK:64133150~piPK: 64133175~theSitePK:239419,00.html P o p u l a t i o n / b i l l i o n s o f p e o p l e How many humans can be sustained by current technologies? http://maps.grida.no/go/graphic/energy_consumption_per_capita_2004 How can science and engineering promote sustainability? Must focus first on energy technologies since energy cannot be recycled. Must replace unsustainable fossil fuels with sustainable energy sources. Chem 83 Class25 2 http://maps.grida.no/go/collection/vital-waste-graphics-2 (US, UK) (Russia, Cuba, Mexico) The answer depends on level of consumption (affluence): Economies are divided by the World Bank using 2006 mean annual income as follows: low income , $935 or less; lower middle income , $936 - $3,705; upper middle income , $3,706 - $11,455; and high income , $11,456 or more. http://web.worldbank.org/WBSITE/ EXTERNAL/DATASTATISTICS/ 0,,contentMDK:20420458~menuPK: 64133156~pagePK:64133150~piPK: 64133175~theSitePK:239419,00.html P o p u l a t i o n / b i l l i o n s o f p e o p l e How many humans can be sustained by current technologies? http://maps.grida.no/go/graphic/energy_consumption_per_capita_2004 How can science and engineering promote sustainability?...
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This note was uploaded on 10/19/2011 for the course CHEM 83 taught by Professor Bonk,j during the Fall '08 term at Duke.

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Class25 - Chem 83 Class25 1 Sustainability Sustainability...

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