BBCOnetodayannouncesthatSirDavidAttenboroughistopresentAPerfectPlanet,abrandnewfive-partnaturalhistorysuper-landmarkfromSilverbackFilms.DavidAttenboroughsaidOceans,sunlight,weatherandvolcanoes-togetherthesepowerfulyetfragileforcesallowlifetoflourishinasto