Warren Karlenzig

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Biographical Information

"Sustainability/IT expert, founder and CEO of the sustainability consulting firm Common Current, (www.commoncurrent.com). Mr. Karlenzig has worked with nations, the State of California, major cities, foundations and the world’s largest corporations developing policy, metrics, strategy and critical operational capacities for 20 years. He has lectured in five nations in three continents, including being the sole US presenter for the European Union on its “Green and Connected City” initiative. Clients have included the White House (Clinton Administration), The US EPA, US Department of State, The California Dept. of Resources, The Columbia and Packard Foundations, and the counties of Riverside and San Bernardino, California.

"Mr. Karlenzig is author of the first and largest U.S. city sustainability benchmarking study, How Green is Your City? (New Society Publishers, 2007) and Blueprint for Greening Affordable Housing (Global Green USA, 1999), as well as the author of a forthcoming chapter in the University of Pennsylvania/ Wharton School of Business textbook, Growing Greener Cities (Penn Press, 2008). He was co-author of the City of San Francisco’s official Sustainability Plan (“Economy and Economic Development” section, 1997) and has appeared in media including The Wall Street Journal, CNN, CNBC, the BBC, Forbes, The New York Times and The Washington Post. Mr. Karlenzig combines his sustainability expertise with a deep background in knowledge-based IT strategies and system architecture, having devised global knowledge management and portal architectures for Chevron and the law firm Brobeck, Phleger and Harrison, as well as one of the largest open-source knowledgebases for regional and local government sustainability practitioners for Sustainlane (www.sustainlane.us) He has a Bachelor’s degree from the University of Illinois and a Master’s degree from Naropa University."[1]


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  1. Techne Verde Advisory Board, organizational web page, accessed July 14, 2013.