More than half of the world’s primates are under threat. Meet the scientists making groundbreaking discoveries to safeguard their future. 

In Europe’s highest mountain range, discover how Alpine lynx, griffon vultures, ibex, crocuses, marmots and more face extreme seasonal fluctuations, from volatile thunderstorms and landslides of summer to avalanches and frozen temperatures of winter. In Part One of the miniseries "The Alps", enjoy the Alps in spring and summertime as newborn animals grow up to face the coming brutal winter.