Chronic cough, breathlessness or pollution exposure may signal underlying lung disease. Here's when you should consider a ...

While Chicagoans may have heard the city's air quality is particularly bad right now, just how bad is it and what exactly is causing the "unusual" levels? The conditions have already led to an air ...

Scientists have discovered the first direct evidence that PM2.5 particles attach themselves to red blood cells, providing a mechanism for how these contaminants spread throughout the human body. The ...