Browse a gallery of the U.S. Air Force's high-altitude balloon experiments and the researchers, scientists, and test pilots who made them possible.

Meanwhile, the landscape is another factor to consider; high altitude often means mountains and steep slopes. While slopes ...

Traveling at high altitude can be hazardous. The information provided here is designed for educational use only and is not a substitute for specific training or experience. Princeton University and ...

Located in the remote, high-altitude landscape of southern Chile, TAWA stands as a testament to resilient and sustainable architectural practices. This project has been longlisted in the ...