As some of the worst wildfires in modern history ravage parts of Canada and the United States this summer, scientists are eager to understand the effects of wildfire smoke on human health. Now, an alarming study has found that people living in areas with persistent exposure to wildfire smoke may have higher risks of developing dementia later in life. In the western United States, there are regions where half of people's annual exposure to fine particulate pollution is caused by wildfire smoke, s
Some people may have twice the risk of dying from a heart attack amid heat waves and high levels of fine particulate pollution, said an American Heart Association study. A cardiologist weighed in.