Earth's Seasonal Secrets

Documentary exploring how animals all over the world rise to the challenge of surviving the winter. While some creatures face an up-hill struggle to survive, a colder climate plays to the advantage of others, who quickly set about making use of inventive means to seize the huge opportunities the season brings. Caribou become 'ice road' travellers as the ground under-foot becomes slippery, and stoats build their own fur beds, snow monkeys set about finding warm baths, and even Emperor penguins - who are built to face extreme low temperatures - find their own way to endure the world's most savage winter conditions. Narrated by Andrew Scott