Amsterdam-based architect Angelo Renna has proposed a 90m-high “sponge mountain” to absorb air pollution in Turin, an industrial city with one of the highest levels of particles in Europe.
The idea is to heap up 6 million tonnes of sand and soil excavated from the construction of a 57km railway tunnel, part of the project to build a high-speed rail link between Turin and Lyon. This would then absorb carbon and pollutants from the air.
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