Rivers provide food and water, but they can also flood or freeze. Human Planet meets people for whom rivers can be both a risk to life and a lifeline. Show more

Dallas Campbell delves into the Horizon archive to discover how our understanding of intelligence has transformed over the last century, from early caveman thinkers to computers. Show more

Italian crime drama. When Fazio goes missing, Montalbano fears that he may be in serious trouble and a frantic search is mounted in an effort to find him alive. Show more

Documentary telling the story of the Voyager space mission, as the two spacecraft leave the area of the sun's influence after 35 years and 11 billion miles. Show more

Investigating the concept of information, Jim Al-Khalili learns that it is not just about human communication, it is woven very profoundly into the fabric of reality. Show more

Ed Stewart introduces Rose Royce, David Soul, Peter Blake, Ram Jam, David Essex, the Stylistics, Donna Summer, Golden Earring and a Legs & Co dance sequence. Show more

Dallas Campbell delves into the Horizon archive to discover how our understanding of intelligence has transformed over the last century, from early caveman thinkers to computers. Show more

Rivers provide food and water, but they can also flood or freeze. Human Planet meets people for whom rivers can be both a risk to life and a lifeline. Show more