I got altitude psychosis a few hundred meters from high camp as I scaled the frigid face of Huayna Potosí, one of the highest mountains in the Bolivian Andes. My optimism, my determination ...

High in the Andes Mountains of Argentina and Chile, mining companies are scouring the landscape to look for copper, gold, lithium and cobalt deposits, among other lucrative ores. Most of these metals ...

Climate change is melting away glaciers around the world, but in the Andes Mountains, a wild relative of the llama is helping local ecosystems adapt to these changes by dropping big piles of dung.

This is how the mountains of the Himalayas in Asia were formed. The Andes are the world's longest mountain range. This causes lava to erupt out of the gap that is left. As it cools down ...