New COVID-19 research uncovers viral behavior insights, driving innovative treatments with Northwestern Medicine's support.

Sticky tar from tobacco builds up inside your lungs too. After years of smoking, it can give them a black color. The nicotine in cigarette smoke temporarily paralyzes and kills cilia. That means ...

In this video, learn about how humans breathe with their lungs and the respiration system ... and the point of breathing is to get oxygen inside the body and to get rid of carbon dioxide.