Specific components of air pollution were linked to increased depression risk in older adults, new research suggested. A cohort study of nearly 24 million adults showed that long-term exposure to fine ...

Ammonium is one of the specific components of fine particulate matter (PM2.5), that has been linked to a higher risk of death compared to other chemicals found in it, according to a new study.

Particle-based ambient air pollution causes more than 4 million premature deaths each year globally, according to the World Health Organization. The tiniest particles—2.5 microns or smaller, known as ...