Chronic obstructive pulmonary disease affects 12 million Americans—most of them smokers. Here, we'll cover the basics on America's fourth leading cause of death.
This 3D medical animation is part of an anti-smoking campaign, showing how smoking causes normal alveolar sacs to become enlarged and thinned over time from...
Chronic Obstructive Pulmonary Disease, or COPD, is a respiratory condition characterized by shortness of breath and coughing. Smog is a major irritant and forms of...
