Particulate matter happens to be a major culprit in Delhi’s air. These tiny particles penetrate deep into our lungs and ...

Particle physics describes the universe at the smallest scale. This includes subatomic particles, like protons and neutrons, as well as elementary particles, like quarks and electrons, which make up ...

Good air quality means few pollutants, while poor air quality indicates hazardous levels of pollutants like ground-level ...

Particles in the smoke are so small that they can evade some of the lung’s natural defenses, causing not only breathing problems but also other health concerns if they enter the bloodstream. Smoke ...

Dear Doctors: We live in the fire zone in Altadena, California. After the evacuations ended, we came home, and now my throat is constantly sore. There’s no smoke smell, but my husband says the air can ...

It is dust made up of sand and mineral particles swept up from 3.5 million square miles of Africa's Sahara Desert. Also called the Saharan Air Layer (SAL) by the National Oceanic and Atmospheric ...