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Four decades ago, countries around the world were using the word ‘Sudbury’ as a unit of pollution. The city was the single largest point source of sulfur dioxide emissions in the 1960s, producing about 2.5 million tonnes per year.
According to John Gunn, director of the Vale Living With Lakes Centre at Laurentian University, that’s bigger than all of Europe today. “Countries were saying, how many Sudburys do you produce?” said Gunn. “And the answer to that question wasn’t one. It was less than one.” Air quality, however, was the tip of the iceberg.
The region had been reduced to a barren wasteland (often referred to as a moonscape) after only a few decades of mining and smelting. Local vegetation was devastated by acid rain and logging, as Sudbury earned a reputation of being one of the most infamous disasters in North America.