but not to sea level concentrations. Since the amount of oxygen required for activity is the same, the body must adjust to having less oxygen. In addition, for reasons not entirely understood, high ...

Mountain visitors who don't take time to adapt can experience acute mountain sickness, with symptoms such as fatigue, ...

Turns out, the highest altitude in the city isn't in any of those ... Mount Airy's 8.5-million gallon tanks stand 960 feet above sea level. The land where the tanks sit is also the highest natural ...

The Western Command of China's People's Liberation Army (PLA) has been conducting combat training with high-altitude ...