Bill Rees: The Vulnerability and Resilience of Cities
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Bill Rees, originator of the ecological footprint, says we are already into overshoot. We can plan to reduce our use of Earth's resources, or plunge through a series of disasters. Full keynote speech from "Resilient Cities" conference. Vancouver, October 20th 2009
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Bill Rees: The Vulnerability and Resilience of Cities
- 1. What if ‘Can Do’ Can’t? The Vulnerability and Resilience of Cities William E. Rees, PhD, FRSC UBC School of Community and Regional Planning Gaining Ground – Resilient Cities Vancouver, BC, 20 - 22 October 2009
- 3. Context 1: The Anomalous, Unsustainable Oil-Based Expansion of Urban Civilization Continuous growth—population and economic—is an anomaly. The growth spurt that recent generations take to be normal is the single most abnormal period of human history. 2009 Population: 6.8 billion The use of fossil fuel beginning in the 19 th Century allowed the explosive growth of the human enterprise
- 4. Context 2: H. sapiens is a deeply conflicted species
- 8. National Geographic, May 2008
- 12. A Major Reason: Cities as presently conceived are incomplete (human) ecosystems (Enclosed in a bell-jar, modern cities would simultaneously starve and suffocate )
- 16. An archetype: Alberta’s oil sands—this used to be boreal forest Note the large warehouse or garage Edward Burtynsky— Oil
- 20. The world is in overshoot depleting future carrying capacity To bring just the present world population up to North American material standards would require 3-4 additional Earth-like planets. One Planet Living Overshoot represents humanity’s ‘ecological deficit’
- 24. Vulnerability 2: The Growing Discovery-Extraction Gap Source: ASPO, Sept 2008
- 26. Atmospheric Carbon Dioxide: A 38% anthropogenic increase since the 19 th Century Rate of increase (ppm/year) 1970-79: 1.3 1990-99: 1.5 2000-07: 2.3 (This exceeds the IPCC worst case scenario and is accelerating!) ‘ Safe’ is less than 350 ppm CO 2 e
- 27. Upward trend continues; 2005 was a new record; we’re at 0.8°C above 1880-1900 average; 0.5°C since 1970. J. Hansen et al., PNAS 103 : 14288-293 (26 Sept 2006) Green bars show 95% confidence intervals Global T has risen 0.8°C in 125 yrs °C
- 37. Be the change! Thank You (and good luck!)