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At cruising height the outside air is so thin and cold the cabin must be pressurized to keep you safe

Passengers aboard a commercial jet cruising at 35,000 feet sit just inches from air so thin it would cause unconsciousness in ...

Before you buy that $20 can of oxygen at Yellowstone National Park, read this

Is canned oxygen worth the hype? Doctors say not really.
The Conversation

The hidden enemy on Mount Kilimanjaro: Safely dealing with low oxygen at high altitude

Last October, my daughter Elizabeth and I stood at Londorossi gate (elevation 2,250 metres), the western entrance to Mount Kilimanjaro National Park in Tanzania, ready to begin the nine-day Lemosho ...
usace.army.mil

Army builds tool to save lives at high altitude

NATICK, Mass. — Mountain climbing is risky business. When unacclimatized individuals rapidly ascend to altitudes greater than 8,000 feet, they put themselves at risk for suffering from high-altitude ...