WEBVTT

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In this lesson, you have learned about
three central perspectives on urban

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sustainability.

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First, the resource perspective.

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Cities depend on a constant exchange with
their environment.

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Energy, water, materials.

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A city is sustainable if its consumption
does not exceed the

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regenerative capacity of the ecological
systems.

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Secondly, the perspective of justice.

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Urban sustainability also means that
opportunities and

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resources are distributed fairly between
people within a city,

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between cities worldwide and, last but
not least, between current and future

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generations.

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And thirdly, the three-pillar model.

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Here, ecological, social and economic
aspects are considered equally.

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In practice, this often leads to
conflicting goals, for

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example between economic growth and
climate

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protection, which must be negotiated
politically.

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The sustainable city is therefore not a
rigid model that

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can be calculated somehow, but a complex
interplay of

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ecological sustainability, social justice
and economic development.

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It is precisely this area of tension that
forms the basis for all further

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discussions in this course.