BBC Earth HD

'S4/E1 - New Safe Confinement'. In this episode our engineering experts are in Germany exploring the pioneering innovations that made the Munich Olympic Stadium possible.

'S5/E2 - The Viking Tomb Mystery'. Golden riches, a missing body, and a grave created for a warrior's horse exposes how a new overwhelming force engulfed and finally replaced the old pagan world of the Vikings.

'S1/E2 - Megawave'. Nazaré in Portugal is the site of the biggest ocean waves ever recorded on Earth. To understand what creates these monsters, we use specialist jet-ski cameras to ride the waves.

'S6/E5 - Bulgaria'. Ben travels to the vast forests of the Rhodope Mountains in Bulgaria to join Miriam and Peter, a couple who have chosen life as nomads, hiking through some of the world's most striking wildernesses.

'S9/E4 - Cold Rage'. Brutal storms threaten the lives of those living in the Arctic as they enter the start if the long dark winter.

'S4/E2 - London Array'. In this episode we're in Blyth, Scotland, home of one of the first wind turbines, off the Normandy coast in France where the military engineers came up with a solution just after D-Day.

'S1/E9 - Kuala Lumpur to Johor Bahru'. In Kuala Lumpur, Michael tries the ancient art of pewter smithing and learns how the discovery of tin transformed a muddy estuary into Malaysia's thriving capital.