Ozone is a gas comprised of three oxygen (O3) atoms. It is unstable and reacts easily to other gases. In its natural state, it is a component in several levels of the atmosphere. At high altitudes ...

Foreign retirees calling Portugal “home” for years. Climate, cost of living and safety among most popular reasons for moving.

Calculating air pollution from wildfires and other events has become more complicated. That doesn’t mean it’s necessarily ...

The Air Quality Index, or AQI, is the primary system used to warn the public when air pollution is dangerous. It’s based on ...

Some Air Canada passengers at Montreal’s Trudeau Airport were annoyed that they will now have to pay additional fees for their carry-on luggage. Passengers who purchased basic economy fares and ...

The air quality index reported in Maricopa County on Jan. 2 is 120, which means the air is unhealthy for sensitive groups. Here's how you can stay healthy.

In Montreal, it’s prohibited to use a wood or solid-fuel burning appliance unless it emits fewer than 2.5 grams of particles per hour. It’s prohibited to use even certified wood stoves or ...

Environment and Climate Change Canada issued the warning for the Montreal and Laval regions ... which will result in poor air quality, especially in metropolitan areas where pollutant emissions ...

With winter only days away and a cold snap in the forecast, Montreal Mayor Valérie Plante announced the opening of a new warming centre where homeless people can take refuge. The newly renovated ...

While the overall AQI was at 442 at around 7 am on Wednesday, the figures in some monitoring stations of Delhi were at the ‘severe-plus’ category. Delhi on Wednesday woke up to another day of ...

PM2.5 levels due to smoke have reached the Unhealthy Air Quality Index (AQI) category or higher in Altadena, Downtown Los Angeles, Malibu, Pacific Palisades, Pasadena and surrounding fire-affected ...

Bill Gates’ Breakthrough Energy Catalyst is awarding US$40 million to Montreal-based Deep Sky to help it test its ... different technologies that remove carbon dioxide (CO2) from the air. “Our single ...