Greta Kaul When the weather gets bad — like it did with this week’s messy reintroduction to winter — public works crews get to work, scraping up the snow and dropping tons of salt on roads across Minnesota.The salt is a point of contention. It’s pretty good for getting rid of dangerous ice, but it has some nasty side effects: When ice and snow melt, the runoff carries salt into the watershed, where it wreaks havoc on the environment.But winter storms like Monday’s leave public works crews without a lot of options — whatever the long-term risk to the environment of using salt, the combination of ice on the roads and commuters represents an immediate risk to public safety. So often, salt it is.In recent years, some Minnesota...
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Brining icy roads can save cities serious money — and could help save Minnesota’s lakes