As urban areas around the world continue to grow, cities are placing an increasingly heavy burden on our environment. Policymakers should therefore treat resource efficiency as equal in importance to climate policy if they want to move towards a sustainable future, according to a new report from the International Resource Panel.
The Weight of Cities: Resource Requirements of Future Urbanization calls for a new strategy to meet the needs of 21st-century urbanization, one that would result in cities that are low carbon, resource efficient, socially just, and in which people can live healthy lives.
Unless the world’s urban areas make optimal use of their resources, cities will soon demand far more resources than our planet can sustainably provide, placing a huge burden on agriculture, energy, industry and transport. In the next 30 years, 2.4 billion people are likely to move to urban areas, bringing the proportion of the global population living in cities by 2050 to 66 per cent.
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The annual amount of natural resources used by urban areas could grow from 40 billion tonnes of raw materials in 2010 to 90 billion tonnes by 2050, an increase of 125 percent if changes are not made to how cities are built and designed.