The 1970s were the heyday of the environmental movement; the 1980s and 90s ushered in the era of sustainability. Today, the cities movement reigns supreme, according to Linda Baker.
Baker writes:
"People [...] began to realize that sustainability as a concept meant almost anything anybody wanted and therefore nothing."
"So opinion makers were once again cast adrift for want of a paradigm– until 2007, when the United Nations reported that for the first time in history, more people would live in cities than in rural areas. Mulling this over, the powers-that-be realized that they too, lived in cities and that urbanism was as good a metaphor as any for the kind of efficient green networks necessary to preserve the world for future generations."
Thanks to Mark Jenkins
FULL STORY: A Brief History of 21st Century Urbanism

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Urban Design for Planners 1: Software Tools
This six-course series explores essential urban design concepts using open source software and equips planners with the tools they need to participate fully in the urban design process.
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Learn the tools for implementing Universal Design in planning regulations.
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Transportation Research & Education Center (TREC) at Portland State University
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