Thisthree-partseriesjourneysthelength,breadth,andheightoftheAndestorevealtheincrediblenaturalhistoryofthelongestmountainrangeonearth.IntheNorthernAndes,risingmountainsanderuptingvolcanoeshaveproducedastunningvarietyoflife.Boastingpoisonfrogs,leglessamphibians,high-flyingmonkeys,thecontinentsonlybears,andtheworldslasttropicalglaciers,theNorthernAndesareunlikeanywhereelseonEarth.