The air would be so thin that even the best climber would have no choice but to use supplemental oxygen. Why? Because of the many factors which affect atmospheric pressure. Pioneering scientists ...

If weather were a rock band, atmospheric pressure might be the bassist — sitting in the background, not quite the center of attention, but crucial to driving the tempo and tone. Air pressure systems ...

The unseasonable chill that has swept through the eastern half of the US defies last year's mild winters and the South's ...

A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of ...