The Respiratory System

A new study finds surgical masks are your best protection against a cold or the flu.

One in three U.S. schools located in pollution zones of major roads.

Alligators can move their lungs inside their bodies to help them dive and surface.

Fossils show therapod dinosaurs had breathing structures like modern diving birds.

A new radar device helps the military spot enemies.

Farm town suffers from urban pollutants trapped by local mountains.

Complex breathing apparatus found in ground beetles.

Rats on a road trip have underscored what scientists have long suspected about highway driving—car and truck exhaust is just as bad for your heart as it is for your lungs.

Beaked whiles are found to dive deeper than any other air-breathing creature. Yet oddly, only during shallow dives do they get the bends.