Miranda Krestovnikoff goes in search of the beautiful and rare white-fronted geese, which every year make an epic migration from Greenland to Ireland to feed on the rich grasses of the Wexford 'Slobs'. Dick Strawbridge takes a ride on 'Brunel's Folly', the dramatic and dangerous coastal railway that the great engineer constructed to cling to the cliff face at Bray Head. Dick learns of the disasters the railway has faced since it opened in 1855. Hermione Cockburn creates an earthquake on Killiney beach to discover how 160 years ago a local man, Robert Mallet, invented seismology, the study of earth tremors that has helped to save countless lives.