In 1947, the British South American Airways plane...  ...Aires at 1:46 p.m. on August 2nd, headed over the Andes mountains. Before the airliner’s disappeara...

The Inca civilization grew a variety of crops in t...  ...Inca civilization grew a variety of crops in the Andes Mountains, despite the rough terrain and scant ra...  ...were the most efficient way to grow crops in the Andes . The terraces leveled the planting area, but the...  ...crops and the traditional ways...