Global warming caused by greenhouse gas and carbon dioxide emissions in the atmosphere, as well as rising sea levels, pollution, environmental degradation, resource depletion and energy dependence are of major concern.

Continuous and massive emission of green house gas

A significant surge in urban population all over the world, on the order of 5 billion people, will be living in cities by 2030, as established by a U.N. report released in June 2007.

More than half of the total emission of greenhouse causing gases is produced by massive urban daily migrations ( i.e. automobile exhausts), supplemented by home and commercial heating and air conditioning requirements.

Urban sprawl and functionally segregated zoning causes:

    - massive emissions of CO₂;

    - the waste of time through daily commuting; and

    - social and cultural isolation.

Unsustainable urban sprawl development at River Oaks, Houston, Texas

The SCP city dwellings open on a garden or conservatory on all floors, 

with a variety of urban functions in each block, as an alternative to sprawl

Sustainable urban form with passive solar stepped duplex dwellings 

in a dense mixed use urban context (plaster model - JL Msika)