For the modern traveler planning complex Asia trips, the challenge isn't just jet lag—it's the physiological stress of flying at 35,000 feet where oxygen levels drop. The O2Ring, integrated with ...

Invasive mechanical ventilation in critically ill adults involves adjusting the fraction of inspired oxygen to maintain arterial oxygen saturation. The oxygen-saturation target that will optimize ...

During the winter months, Southern California-based NASA aerospace engineer Frank Tai and his wife get their mountain-town fix through their condo in Breckenridge. For years the fix came with a cost: ...

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 ...