It's 60 years since the Big Freeze, one of the coldest winters on record, when even the sea froze over, and rural communities were cut off by blizzards and towering snowdrifts. Anita Rani and Joe Crowley are in Flash, the UK's highest village, to see how the community coped then and how they brace for winter now. They also find out what sort of weather can be expected in future winters.Anita unlocks the secrets of Flash's history, from special buttons to a booming business in counterfeit money, while Joe discovers the secrets of seaweed in the village brewery. Adam Henson reveals a new insulating product for chimney flues, and Tom Heap is on the Isle of Eigg, where islanders aren't waiting for government to help them level up but are doing it for themselves.