"Green" today describes practices which are earth-friendly, less-toxic, less-wasteful, and work more with nature rather than against it. Other descriptive words include eco-friendly, earth-friendly, and environmentally preferable. The green concept is also described overall as "sustainability. Sustainability, in a general sense is the capacity to maintain a certain process or state indefinitely "
All cities--and villages and slums--are on a continuum of gray to green. Gray being of the post-Industrial Revolution "gray economy" of fossil fuels, and Green being of the way things were, the green economy, or a mix of both.
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