The built environment in the 21st century faces a massive and unprecedented crisis: the depletion of the very basis of urbanisation as we know it. The coming end of the fossil fuel era throws the meaning of architectural dogma in the 20th century into stark relief. The modem movements of Futurism, Constructivism, the Bauhaus, Postmodernism and Deconstructivism and their legacy are a highly significant but temporary historic feature - the product of the last Industrial Revolution, was sparked by an abundance of cheap energy. The mainstream discourse engendered in late 19th and 20th century architecture and town planning principles celebrated a wild illusion: the arrival of the New Age as an all-powerful myth that thrived by totally obfuscating the underlying issues of sustainability.All contemporary urban civilisation, mega-city formation and spatial globalisation are driven by a single-worldwide force-, cheap oil, coal and natural gas as development drivers. As these supplies dwindle and the spectre of catastrophic climate change triggered by greenhouse gas emissions rises, the call for fundamentally new conceptual frames and solutions will soon become all-consuming –and lend ultimate meaning to the currently rather vague concept of sustainability on the built environment.
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