HEPA

At the time, wildfires were raging throughout parts of British Columbia and so Amber checked the air quality index on a weather app that morning to make sure it was safe for Carter — who had asthma — to play outside.

Wildfire smoke hanging over communities across Canada in recent months has highlighted the need for better ventilation in buildings used by the public, experts say, urging the establishment of strong indoor air quality standards.

A new poll suggests turbulence ahead for airlines seeking public support for their current COVID-19 plans.