Wildfire smoke is back – fires burning across Canada are already triggering US air quality alerts in the Midwest and Plains

The pressing question on many people's minds: "Is this the new normal?" From our perspective as air quality scientists, we think the answer is likely "yes."…

https://theconversation.com/wildfire-smoke-is-back-fires-burning-across-canada-are-already-triggering-us-air-quality-alerts-in-the-midwest-and-plains-229992