Air pollution, research shows, lowers our ability to fight off infections. It worsens reactions to viruses in people with health challenges like asthma. And it could have a pernicious effect in a pandemic.
Two communities — one in Canada, one in the U.S. — share both a border along the St. Marys River and a toxic legacy that has contributed to high rates of cancer. Now the towns are banding together to fight a ferrochrome plant.