Could breathing become a luxury? Wildfires in Canada have sent clouds of smoke across huge areas of North America. Some think this is a sign of things to come.
Americans stay inside as sky turns orange
Emergent emergency: The WHO refers to dirty air as “the world’s largest environmental health risk". Glossary
New York - A city in the USA. It is in a state also called New York.
Canada - A country in North America. It is the second-largest country in the world by land area.
Climate change - Long-term shifts in temperatures and weather patterns. Human action is a major cause of climate change.
Air pollution - The presence in the air of harmful or poisonous substances. Air pollution can cause many health problems.
Extreme - Very great, or beyond what is expected.
Luxury - Something that makes your life very comfortable or pleasant.