Drawing on examples from China and India, Betsy Otto, Xiaotian Fu, and Sahana Goswami from the World Resource Institute present the benefits of circular economy approaches in urban wastewater treatment.
Creating urban spaces that allow for the free flow and penetration of water and wind is essential to the survival of water-based cities like Bangkok. “Landscape porosity” can help us better understand and defend these urban ecosystems in times of climate change, says Kotchakorn Voraakhom.
The world’s cities have a critical role to play in supporting global sustainability efforts and tackling climate change. Effective waste management lies at the very core of these ambitions, says Donovan Storey from the Global Green Growth Institute.
In times of rapid urbanisation, increasing population, resource depletion, degradation of ecosystems, growing pressures on urban land use and climate change, nature-based solutions (NBS) provide opportunities for both society and nature. The UrbanByNature programme supports cities and practitioners in applying NBS that are cost-effective and mutually beneficial.
The waste produced by cities does not need to be dumped – but instead can become the starting point of a new production cycle, argues Nick Jeffries from the Ellen MacArthur Foundation.
Water as a common resource that no one should derive profit from – an idea that stands in crass contrast to privatising urban water management. Kostas Nikolaou, professor and activist with the Greek water movement K136, portrays their successful fight against privatisation.
Forests provide tremendous benefits to urban areas such as clean air and water, climate resilience and biodiversity, human health and well-being. They also provide jobs, recreation, and a suite of nature-based solutions for city infrastructure, argues the international alliance Cities4Forests.