DULUTH — Subzero temperatures lately have produced ethereal "smoke" on Lake Superior. Also called "steam fog," sea smoke "forms when water evaporates from the warm water surface and immediately ...

DULUTH — Smoke from Canadian wildfires is again rolling into the Northland, spurring an air quality alert for most of northern Minnesota through 6 a.m. Friday. The Minnesota Pollution Control ...

The Minnesota Pollution Control Agency has received a number of reports of heavy smoke and the deposition of ash in northeastern Minnesota. The smoke and ash are from the Pagami Creek fire ...