Perhaps it is to be expected in the country that invented high-altitude rail travel.
Kenneth Baillie, an expert in high-altitude physiology in Edinburgh, Scotland, who co-founded the website altitude.org.
Aspen, Colorado, for example, is one of the trickiest high-altitude airports in the country.
The original Mercury spacesuits were a modified version of pressure suits that pilots wore in high-altitude jet aircraft.
Images of the three planets at HR 8799, however, were captured directly using two high-altitude telescopes in Hawaii.
Ever since Humboldt's visit, Ecuador has become a popular destination for high-altitude mountaineering.
Today frostbite is much more common because so many Everest mountaineers just don't have Mallory and Irvine's high-altitude experience.
One reached an altitude of 25 miles (40km) attached to a high-altitude balloon.
Not everyone agrees about the effects of a high-altitude EMP for civil infrastructure.
Thanks to London's rising skyline, high-altitude dining is the city's latest trend.
The BAMS-D program has been developing tactics and doctrine for the employment of high-altitude unmanned patrol aircraft since November 2006.
Flight 447 crashed into the Atlantic north-east of Brazil on 1 June 2009, after running into an intense high-altitude thunderstorm.
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Asthma inhalers like albuterol, which work by stimulating beta-receptor cells in the lungs, were first used to treat high-altitude climbers.
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And researchers from the University of Colorado, Denver, are planning a high-altitude research trip to Bolivia with 24 study participants.
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Suraj flashed a cheeky grin through his beetelnut-stained lips, leaving us intrigued by how many more wonders this high-altitude desert could possibly hide.
The United States has several simulators that could be modified to emulate the EMP effect of a high-altitude nuclear blast.
Further piquing the imagination are the minority tribes who live among the high-altitude valleys, struggling to maintain their ethnically independent identities.
While it may vie for the most dramatic, this high-altitude hot spot is now one of many built in major metropolises.
The most promising initiatives near term, he thinks, include solar thermal, high-altitude wind power and deep drilling to tap geothermal power.
As someone who has done high-altitude trekking, including to the Everest base camp and Mount McKinley in Alaska, Babar is used to careful bets.
But high-altitude carbon emissions are reckoned to be more damaging than low-level ones, although nobody is sure by exactly how much.
With accommodation in huts along the way, the hike runs through the moist, high-altitude forests covering the Outeniqua Mountains above Knysna, finishing in Harkerville Forest.
But high-altitude wind currents forced their craft onto a more southerly course.
Range and climb performance improvements, especially out of high-altitude airports, is outstanding.
The High-Altitude Water Cherenkov Observatory or Hawc, high on a Mexican plain, now holds the record for the highest-energy light it can capture.
Tierney stepped off Wall Street in the 1995 to work with U.S. professional soccer and pursue his love of bicycling and high-altitude climbing.
By means of steel cables and iron brackets anchored into rock faces, climbers reach a high-altitude world that would otherwise be seen only by hardened alpinists.
He then plans to sit out an expected patch of bad weather in a high-altitude camp before going on to the final two peaks.
The RQ-170 Sentinel is an advanced high-altitude surveillance drone used by both the US Air Force and the CIA. It does not carry weapons.
Hinson, who has 1, 300 hours of cockpit time in the aircraft, said there was an "insatiable demand" for the intelligence the high-altitude plane could provide.
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