For centuries, scientists have known that plants "breathe" through microscopic pores on their leaves called stomata. These ...

Scientists at the University of Illinois Urbana-Champaign have developed a new system that allows researchers to observe how ...

When we breathe, air moves through the small passage-like bronchioles of our lungs until it reaches the alveoli. These tiny sac-like structures contain a micron-thick hydrophobic epithelial membrane ...

Your lungs are vital for providing your body with fresh oxygen while ridding it of carbon dioxide. This process is called gas exchange. In some individuals, such as those with chronic obstructive ...