Algae are the new delivery drivers: they are tiny enough to float in inhalable liquid particles and travel deep inside the ...

Breathing in medicine-carrying microrobots may sound like the stuff of science fiction, but researchers at UC San Diego are ...

Cilia are small hairs which beat to push the mucus back up the trachea so it can be swallowed and destroyed in the stomach. Clean air then enters the two bronchi, one bronchus going to each lung.