With the help of new, cutting-edge camera equipment, we explore some of the most unbelievable scenes nature has to offer, from shallow reefs to the realm of the giant squid.

A scientific expedition sets out for Borneo to seek a flower called the Blood Orchid, which could grant longer life. Meanwhile, they run afoul of snakes and each other.

Clowns, they're not just for laughing anymore.

Marcus Du Sautoy wants to find out how close we are to creating machines that can think like us: robots or computers that have artificial intelligence. His journey takes him to a strange and bizarre world where AI is now taking shape. Marcus meets two robots who are developing their own private language, and attempts to communicate to them. He discovers how a super computer beat humans at one of the toughest quiz shows on the planet, Jeopardy. And finds out if machines can have creativity and intuition like us. Marcus is worried that if machines can think like us, then he will be out of business. But his conclusion is that AI machines may surprise us with their own distinct way of thinking.

1,700,000 years ago in Africa, Homo ergaster, an ancient predecessor of modern humans, had to scavenge to survive. They lived in the elements among the monsters of the day, like the saber-toothed cat. Over time, early humans evolved and developed simple tools, began to communicate, and learned to control their most important tool: fire. But the monsters were still there. 300,000 years ago, Homo erectus learned to hunt the giant Irish elk, using fire to drive these great beasts through a narrow gorge and over a cliff. While hunting skills improved, proximity remained a necessity to kill a huge beast. 40,000 years ago, Neanderthals were at the top of their form, hunting beasts like the Giant Steppe Bison. The Neanderthals were usurped by an entirely new race of humans, the Cro-Magnons. They adapted and survived when the Neanderthals could not. They would become the undisputed masters of our planet. They would become the humans we are today.

Morgan Spurlock ("Super Size Me") and his group continue their experiment to live in the wild only stone-age technology. Hunger and deprivation push the group to the brink of failure. Can a successful elk hunt save them?

In the autumn of 1941, a young Austrian doctor called Aribert Heim was assigned to the Mauthausen Concentration Camp. In just six weeks, he murdered hundreds of inmates by carrying out horrific and needless experiments. His 'procedures' included injecting poison directly into the hearts of his patients, often timing them to see how long it took them to die. He would amputate limbs without reason, and without anaesthetic, and would even keep mementos of his victims, using skin as a lamp shade, and a skull as a paperweight.

With stunning clarity, veterans of the world’s most memorable conflicts tell never-before-heard stories of rescues, sniper attacks, ambushes, and hand-to-hand combat. Through such state-of-the-art technology as aerial terrain mapping and 3-D animation sequences, legendary battles are recreated shot by shot in vivid, crisp detail. Coupled with eyewitness reports from military experts and soldiers from World War II to Iraq, these blow-by-blow re-creations of history’s bloodiest confrontations take viewers to the front lines of historic military operations from the perspectives of both sides of the fight, making SHOOTOUT! the most accurate gun battle series ever created.