Wildfire smoke from Canada has made for bad air quality over parts of the Upper Midwest. Most of Minnesota had “unhealthy” air quality Saturday.

Smoke from Canadian wildfires is expected to drift into North Dakota again in coming days, potentially degrading air quality.

A fast-moving wildfire near the Grand Canyon’s North Rim has destroyed the historic Grand Canyon Lodge and dozens of other structures, triggered a chlorine gas leak, and forced widespread evacuations.