The Honeywell Designer Series HPA830 air purifier lacks style and fancy features, but its air-cleaning performance got the top marks in our at-home tests.

This report investigates the effectiveness of popular wearable air purifiers, examining the negative ion technology they claim pushes pollutants from the breathing zone. The analysis reviews ...

Personal care products influence the chemistry of the air swirling around us. Lotion and perfume disrupt chemical reactions that occur between ozone and skin oils, researchers report May 21 in Science ...

Small particles of PM2.5 are microscopic dust smaller than 2.5 micrometers, capable of penetrating deep into the lungs and ...