Many cities in the Americas are starting an intensive move toward sustainability. Sustainability programs, technology, innovation and citizen involvement each play a role in the transformation of green and smart cities, Leon Kaye writes. "The push towards smarter building is occurring feverishly at the grass roots level, too. More architects are embracing the concept of humanitarian design, the convergence of cutting-edge architecture, sustainable or recycled materials, and mass scale that together allow the building of homes and community centers at an affordable price," Kaye writes.

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