Antarcticaisthelastgreatwilderness.It'sthecoldest,windiest,driestandmostisolatedplaceonEarth.Andeverywinter,foroverthreemonthsoftheyear,thesunneverrises.Butit'salsohometotheBritishAntarcticSurvey'sHalleyResearchStation.　　AveteranoflivingandworkingatHalleyintheearlyeighties,BBCweathermanPeterGibbsmakesanemotionalreturntotheplaceheoncecalledhome.Aplacethat,duringhistime,waskeytothediscoveryoftheozonehole.　　Thejourneystartswithanarduous12-day,3000-milevoyageonboardtheRRSErnestShackleton.Onceontheiceshelf,PeterisdelightedtofinallyarriveatthefuturisticresearchstationandmarvelsatthecuttingedgesciencebeingdoneatHalleytoday.Fromvitaldiscoveriesabouthowourlivesarevulnerabletothesun'sactivities,tostudyinginterplanetarytravelandthethreatofman-madeclimatechange.　　ButPeter'sjourneyisalsosomethingofarescuemission.Theresearchstation'shomeisafloatingiceshelfthatconstantlymovesandcracks,andtheiceshelfhasdevelopedachasmthatcouldcastHalleyadriftonamassiveiceberg.