Terraces in the archaeological site of Pisac, near Cusco, Peru. Andean populations created these characteristic agricultural terraces on the hillsides. The Inca system for growing and harvesting ...

Until recently, the Andean bear—the only species of bear in South America, easily recognized by the light-colored markings that frame its face like glasses—was thought to be almost mute ...

It stretched north to south some 2,500 miles along the high mountainous Andean range from Colombia ... by laboring on the myriad roads, crop terraces, irrigation canals, temples, or fortresses.