A systematic modeling study of simple air cleaners using a box fan shows these inexpensive units can greatly decrease the amount of airborne virus in these spaces, if used appropriately. Improved ...

WASHINGTON, May 11, 2021 -- Improved ventilation can lower the risk of transmission of the COVID-19 virus, but large numbers of decades-old public school classrooms lack adequate ventilation systems.

When wildfires threaten people's communities, human health is impacted far beyond the inferno. Residual smoke distributes in the breeze, infiltrating homes, schools and offices. To help people protect ...

An air cleaner can help remove indoor pollutants and reduce the spread of pathogens such as the coronavirus. The Post’s Lena Sun demonstrates how to make one. (Video: Joy Sung, Lena Sun, Jayne ...

Portable air purifiers are good for helping air out your home, reducing or increasing humidity, limiting access to air pollution, and generally keeping your home air clean. However, you need to get ...