If you've ever been on a flight, you've heard about the oxygen masks that may drop down, but did you know they only have a few minutes worth of air? Here's why.

Without supplemental oxygen, the human body begins to decline quickly above 26,000 feet. In the two minutes after the explosion, Southwest 1380 plunged about 8,000 feet, to about 7,924 meters.

737 airplanes because passenger oxygen masks could fail during an emergency due to a retention strap. The FAA said it was requiring the inspections of 737 MAX and Next Generation airplanes after ...