Special access to cutting-edge factories reveals how America’s favourite foods are made, and how assembly lines produce huge amounts of hot dogs, chocolate bars and other treats.

Billy and Alexis investigate alarming problems in forensic expert testimony, citing multiple cases in which people were charged with murders they didn’t commit.

Like the Ark of the Covenant and the Graal, the Holy Lance is one of the sacred relics of Christianity. Mentioned in the Gospel of John, it is known as the weapon used by Roman legionary Longinus to pierce Christ’s side after his crucifixion. “Blood and water” came out of the injury — a phenomenon considered to be a miracle. The Lance became one of the most coveted relics of the Passion of the Christ. According to the legend, whoever possesses it becomes invincible and capable of ruling the world. Throughout history, the Lance have been sought after by many ambitious leaders: Emperor Constantine, Napoleon, Barbarossa, Hitler…

The Wolong Panda Centre in China breeds Giant Pandas. The majority is raised there together to become superstars and ambassadors for China across the world. A few are on a different mission. PANDA GOES WILD is about one panda’s journey from birth to freedom over three years, and understanding the wild world he will face.

From scorching deserts to predator-filled forests, Australia is home to some of the harshest environments on the planet. Here, animals have carved out extraordinary adaptations to survive and thrive.

Miriam Margolyes and Alan Cumming take off on a motorhome adventure to rediscover their Scottish roots.

Easter Island is one of the most isolated on Earth. However, its people, the Rapa Nui, have left behind an exceptional heritage: Dwellings, ceremonial altars, and above all nearly 900 moai, these giant statues measuring 3 to 5 meters on average and which are scattered all over the island. Supposedly built between the 13th and the 17th centuries, they were sculpted out of blocks of tuff, a volcanic rock extracted from the Rano Raraku volcano. They were then placed over an ahu, a type of platform made out of basalt that served as an altar.

Jim Moir (aka Vic Reeves) explores Video Art, revealing how different generations ‘hacked’ the tools of television to pioneer new ways of creating art that can be beautiful, bewildering and wildly experimental.

Sir Billy Connolly is one of Britain's favourite comedians. He burst onto the national consciousness in 1975 by telling an outrageous joke on Parkinson, and in the subsequent decades he's become - to his own evident surprise - a much-loved national treasure. Today, his work is known and admired by millions, not least by other comedy performers who regard him as Britain's first truly alternative comedian.

Lives of glamourous fame and fairy-tale elegance turn into bitter break-ups and divorces.

Sam Fender goes in search of a musical hero from another era - the late, great, Alan Hull of Lindisfarne. Sam is amazed how few people, outside of his native north east, know much about his hero's work. He's now on a mission to win back Hull's place in music history.