US Cities Grapple with Dangerous Air Quality Due to Canada Wildfire Smoke

Smoke from Canada's wildfires has led to school closures, postponed baseball games, and unhealthy air quality in several US cities, including Washington DC and New York City. At least 13 states have issued air quality alerts, impacting an estimated 115 million people. The wildfires have already scorched over 6.7 million acres in Canada, and officials warn that this could be the country's worst wildfire season on record. The increase in global temperature caused by emissions from burning fossil fuels is leading to larger, more frequent wildfires around the world, creating a vicious cycle that further contributes to global heating.