Comments by Warren Karlenzig Subscribe 
On UN's New Sustainable City Effort Starts With Asia
The UN Shanghai Manual, which comes out October 31, includes case study examples from every inhabited continent (including many from North American and European cities), as well as policy recommendations that are relevant to all cities, but that should be especially helpful to developing nation cities in Latin America, Africa and Asia. The United Nations training and capacity building based off the Shanghai Manual that begins in November will be focused first on the cities of 15 developing Asian nations. There will be more to report in Rio for the UN Conference on Sustainable Development (Rio+20) in June 2012, including complementary UN and other non-governmental organization urban sustainability initiatives that I am advising. Exciting announcements are coming!--Warren Karlenzig
On Why Cities Might Just Save the World: An Interview with Siemens’ Pedro Miranda
Thanks for the enlightening post Robin. If we--the global we--can't get sustainable growth right in megacities, we are up against the biggest challenges of the century, climate change being only one. I posted in the fall about the Megacities training manual that I wrote for the United Nations that will be coming out in May, which includes global sharing of urban best practices in sustainability, economic development, including management approaches and use of information and communications technologies : http://www.commoncurrent.com/notes/2010/08/unshanghai-expo-megacities-sus.html. I look forward to the Asian and North American cities ranking, as I wrote the first book statistically benchmarking US city sustainability, How Green is Your City? The SustainLane US City Rankings in 2007--the Siemens/ Economist rankings have subsequently used many of the same categories of analysis and analytical approaches used in this book and in 2005-2008 SustainLane studies.

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On Keeping Singapore Green with Data and Design
This is well needed, and complements Singapore's use of its citywide hardscapes + natural functions to harvest and reuse rainwater (10:50 mark of 15:55 video): http://bit.ly/STGhA6