The US Army is developing high-altitude spy balloons designed to track enemy stealth fighters beyond the reach of traditional ...

Balloon Jupiter had to land ... in the 90-degree heat of August 17, the air was still. Wise had to ascend to 14,000 feet—an astonishing altitude at the time—before he found any wind at all.

Beyond four decades of memories and a new route up, Skip Horner left another legacy on Kilimanjaro: 20 pairs of boots for ...

Scrutinizing data from the high-altitude flights ... from aerosol cans, air conditioners and refrigerators. Were those products injecting massive amounts of CFCs into the stratosphere?

Normally, you don’t think of these radios as having a lot of range, but if the transmitter is high, the range will ... nearly two minutes to send. The balloon system sends every 10 minutes ...

UC Davis Professor Hugh Safford was hiking for pleasure in California's High Sierra when he stumbled upon a new elevation ...

In addition, for reasons not entirely understood, high altitude and lower air pressure causes fluid to leak from the capillaries which can cause fluid build-up in both the lungs and the brain.