Nearly twice the size of the United States, Russia is the biggest country on Earth. From the subtropics to the arctic and the Atlantic Ocean to the Pacific; giant lakes, active volcanoes and endless forests.
Steve finds out how washing our clothes is harming our marine life. Why has the fish and chips supper changed? And which lobster is making a comeback? Plus why is one man fascinated by 'the Christmas Tree fish of the sea? Chris finds out. Presented from Herne Bay in Kent .
The highest mountain range on earth is home to extraordinary animals and remarkable ancient cultures. In the depths of winter, snow leopards creep into isolated mountain villages in search of food. In hidden valleys, bizarre-looking monkeys huddle for warmth in a frozen forest. Ancient Buddhist monasteries have age-old rituals creating beautiful works of art made from mountain sand and athletes compete in the gruelling Everest marathon. Strange and exotic creatures live in the Himalaya - the chiru, with the warmest wool in the world, snakes bathing in hot springs and wild yak competing in their annual rut. Breathtaking photography reveals a lost world of surprises in the latest landmark wildlife series from the BBC.
Every year, thousands of salmon make their way upstream along the nearly 2000-mile-long mighty Yukon River, desperate to reach spawning beds. Eagerly checking their progress is a host of hungry predators, from grizzly bears to bald eagles-all desperate to stock up on protein before the long winter months ahead.
A look at how a dung beetle standing on its head can roll a ball in a straight line; if egrets ever regret hanging out next to hungry alligators; and what ghostly creature was caught on camera 3000 feet below the ocean's surface.
Off the coast of Micronesia, Kate Humble and her scuba team continue to discover spectacular examples of underwater life. Meanwhile, the deep-sea divers search for previously unseen fish in depths that test the limits of human endurance, but their explorations are hindered by an unexpected equipment failure.