Pillars of Sustainability

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Social

Social sustainability is achieved when human groups—from families to cities to nations—are able to function indefinitely at a defined level of well-being and harmony.

Economic

Economic sustainability is achieved when output is able to indefinitely support a fixed level of production.

Environmental

Environmental sustainability is achieved when the quality of the biosphere remains indefinitely unaffected by set rates of extraction of natural resources.

Social

Social sustainability is achieved when human groups—from families to cities to nations—are able to function indefinitely at a defined level of well-being and harmony.

Economic

Economic sustainability is achieved when output is able to indefinitely support a fixed level of production.

Environmental

Environmental sustainability is achieved when the quality of the biosphere remains indefinitely unaffected by set rates of extraction of natural resources.