Air pressure fluctuations occur primarily because of changes in temperature, elevation and humidity. Regarding temperature, warm air is less dense than cool air. As air is warmed, its molecules move ...

Understanding atmospheric pressure is vital, newsroom meteorologist Justin Ballard said, because those giant H’s and L’s representing high and low air pressure systems on a weather map are meaningless ...

LYNCHBURG, Va. (WSET) — The Science Behind Severe Weather is here and Monday is Day One of experiments. Here is one the whole family can do at home using household objects. This experiment ...

MOLINE, Ill. — If you've ever climbed a mountain or taken a ride in an airplane, you know that pressure changes with height. Hikers that work in extreme altitudes have to use techniques to keep up ...

Unfortunately, the best laid plans of our body often go awry. Obstructive sleep apnea is a condition in which a person’s airways become blocked by the movement of soft tissues in the throat, ...

Houston faces hazardous air quality Friday as a dome of stagnant high pressure lingers, worsening pollution and creating ...

IN the course of some experiments recently carried out in these laboratories, a curious series of annular markings was observed in a glass tube through which air, carrying water-vapour and powered ...

ST. LOUIS — Rain and intense winds aren't the only severe weather that will affect residents' lives around the St. Louis region on Tuesday. Very low air pressure is also expected to hit communities, ...

People whose homes are near busy highways may be able to reduce their blood pressure by running an air purifier with a HEPA filter, a study found. Just a month of air filter use cut systolic blood ...