Summer is smoke season now

Toronto pedestrians walk as wildfire smoke turns the skies orange. Photo: Cole Burston/AFP via Getty Images The wildfire smoke drifting into the eyes, throats and lungs of millions of Americans and Canadians this week is a stark reminder that the planet is changing in unsettling ways. The smoke, from wildfires raging in northern Minnesota and Canada, is causing dangerously bad air across the Midwest and Northeast — and could soon waft elsewhere. Air quality alerts have been issued in New York,…