Fighting illness with air handling

Phil de Haan at School News Network explores what schools are doing to sanitize the air students, staff and teachers share: It’s mid-morning on a warm and sunny March day, and 21 fourth-grade students are back in the classroom after recess. Many local districts are seeking ways to increase air circulation in buildings as a way to prevent disease, including Covid-19Inside, they dutifully adjust their masks as they settle back in for their next lessons. But as they exhale – still excited and maybe a little out of breath – they begin to add a variety of particles to…