Air circulation in buildings is rarely controlled solely by windows. Doors play a critical and often underestimated role in determining how air moves from one room to another. Their position, ...

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DURHAM, N.C. (WTVD) -- Some Triangle-area school districts are investing in air filters as students return for in-person instruction. Durham Public Schools posted on Facebook that the district ...

Stagnant, poorly circulated air could foster coronavirus transmission in some indoor spaces. But it can be hard to tell whether a building's heating, ventilation, and air conditioning (HVAC) system is ...