Smoke from the wildfires stretches across the Atlantic to Norway.

The smoke from wildfires in Canada that has blanketed large parts of North America this week and created hazardous breathing conditions was expected to shift over Norway on Thursday but not cause trouble for people there, environmental officials said.Scientists at the Climate and Environmental Research Institute in Norway used forecast models to predict how the smoke from the hundreds of wildfires burning across Canada would move through the atmosphere.

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