Smoke from Canadian wildfires still engulfs large parts of the American Northeast in yellowish-gray smoke. U.S.
authorities have issued warnings in various regions and expect the situation to continue for several more days. New York Governor Kathy Hochul called the situation an "emergency crisis" and said that the air pollution index in parts of her state was eight times higher than normal. The smoke from wildfires is associated with an increased rate of heart attacks and strokes, an increase in asthma and other respiratory diseases.