Tiny particles in wildfire dig into the lungs and sometimes reach the bloodstream. Preliminary state data shows an increase in ER visits during and immediately after smoke alerts.

New measurements of fine microplastic particles suspended in the air in homes and cars suggest that humans may be inhaling ...

When you're sick you'll often produce more phlegm, and might notice it's thicker or a different color: white, green, yellow ...

We all tend to interpret sneezing, a runny nose, and congestion as a common cold. But although symptoms may be similar, ...