Thisthree-partseriesjourneysthelength,breadth,andheightoftheAndestorevealtheincrediblenaturalhistoryofthelongestmountainrangeonearth.IntheNorthernAndes,risingmountainsanderuptingvolcanoeshaveproducedastunningvarietyoflife.Boastingpoisonfrogs,leglessamphibians,high-flyingmonkeys,thecontinent"sonlybears,andtheworld"slasttropicalglaciers,theNorthernAndesareunlikeanywhereelseonEarth.