Exhaust emissions from a Norwegian Cruise Line vessel docking in Juneau prompted at least 10 complaints to an Alaska regulatory agency.
Officials say a wildfire in Southwest Washington that ballooned Sunday, causing regional air quality issues, may have been started by a firework or firearm.
Given the rarity of similar incidents, the whales have attracted a large crowd since Christmas Eve. On Boxing Day, the Coastguard confirmed that patrols have been taking place to ensure the safety of the public in the days since the animals were stranded.
Wildfires are still burning in Quebec's northern zone, with 11 fires still considered out of control early Tuesday morning. However, the provincial forest fire prevention agency, SOPFEU, said rain since Sunday and rising humidity have helped stabilize the flames for the time being.
Air quality alerts remain in place for several areas in B.C.'s southern Interior on Tuesday as more than 200 wildfires continue to burn through hundreds of square kilometres of the province.
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