From sewage and scum to swimming in ‘blue gold’: how Switzerland transformed its rivers
From sewage and scum to swimming in ‘blue gold’: how Switzerland transformed its rivers
www.theguardian.com
From sewage and scum to swimming in ‘blue gold’: how Switzerland transformed its rivers
In the 1960s, the Swiss had some of the dirtiest water in Europe. Now, their cities boast pristine rivers and lakes – and other countries are looking to follow their lead