Heavy smoke from wildfires blankets the US Midwest and Northeast, prompting evacuations

Heavy smoke from over 100 wildfires in Canada has blanketed the U.S. Midwest and Northeast, prompting evacuations in Minnesota's remote Boundary Waters Canoe Area Wilderness. Thousands of campers were evacuated as smoke and extreme heat created unhealthy conditions, with rangers and the Canadian Air Force assisting rescues. Officials warn of ongoing risks from wildfires fueled by drought and heat.