Different types of airflow patterns in animal lungs. Mammals (top left) have a tidal airflow pattern where air moves to-and-fro through a branching network of bronchi. Birds (top right) have looping ...

Birds and mammals are on extreme ends of the airflow spectrum. Mammals inhale oxygen-rich air and they exhale depleted air, exhibiting a so-called tidal flow pattern. In contrast, bird breath travels ...

A new study uses computer simulations to track airflows inside a car's passenger cabin, providing potential strategies -- some of them counterintuitive -- for reducing the risk of transmitting ...

A single-pass airflow pattern, or reduced pass airflow patterns, strive to minimize the airborne particulates in the space to reduce the risk of health care-acquired infections. Displacement ...

Take a deep breath in. Slowly let it out. You have just participated in one of the most profound evolutionary revolutions on Earth--breathing air on land. It's unclear how the first vertebrates ...