New data identifies two key risk factors for high-altitude pulmonary edema, a leading cause of death on the mountain.

Low-level helicopter flights are planned over areas of Upper Michigan and northern Wisconsin to image geology using airborne ...

Low elevation and valley snow to start Friday with rising snow levels through the day. Wet and windy weather will continue ...

WE’RE GOING TO CONTINUE TO FOLLOW THOSE DOWNPOURS AND SOME AREAS OF HAIL THIS EVENING ON THE EAST SIDE OF THE VALLEY AND IN ...

The midair crash near DCA that killed 67 exposed critical gaps in air traffic management, as investigators uncover frequent ...

suggest increasing your sleeping elevation by no more than 1,500 feet per night once you’re above 10,000 feet. If logistics force you to make a bigger jump, you need to add rest days to keep the ...

The NTSB issued its preliminary report on the midair collision between a passenger plane and helicopter over Washington, D.C.

In mountains above 1,500 feet elevation, snow will fall — with even Santiago Peak potentially getting a few inches — while more was expected on Mt. San Jacinto, said Adam Roser, a National ...