Mountain adventures promise stunning views and unforgettable memories, but ascending to high elevations triggers profound ...

Mexico's Autódromo Hermanos Rodríguez is about 7,500 feet above sea level and the thinner air will impact engines.

But the elevation of destinations like Mexico City (about 8,000 feet), the summit of Haleakala on Maui (10,023 feet), Cuzco ... Say you’re headed to a high-altitude ski resort.

Researchers have discovered the remains of medieval cities perched above the ancient Silk Road in the rugged mountains of southeastern Uzbekistan. One of them is a sprawling, high-altitude ...

The High Altitude Research Laboratory, or HARL, is a state-of-the-art facility built at Pikes Peak summit, 14,115 feet above sea level. This building replaces USARIEM’s 50-year-old facility, the ...