Water-purifying park could save the heart of Helsinki from turning into a swamp
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Töölönlahti Bay suffers from eutrophication, an over-enrichment of water by nutrients commonly caused by fertilizers and factory runoff, starting in the 1800s and persisting to this day due to low water circulation levels. The visionary proposal uses natural systems to clean the water, such as wetlands and other bio-remediation areas with pollutant-filtering plants. The new park encircling the waters would serve as a new green heart that unifies the two parts of Helsinki’s city center currently...