Search and rescue teams work in the aftermath of the collision of American Eagle flight 5342 and a Black Hawk helicopter that crashed into the Potomac River, with the Capitol dome in the background, as seen from Virginia, U.S., Jan. 30, 2025. Carlos Barria | Reuters How an Army Black Hawk helicopter collided with American…
Some of the most ballyhooed experiences in travel involve journeying to lofty heights—from skiing in the Rocky Mountains to hiking in the Andes and trekking up the Himalayas. But the low levels of oxygen and barometric pressure at increased elevations can cause altitude sickness (aka acute mountain sickness), which feels more like a hangover than…