Series following bright teenagers from low-income backgrounds across the UK. In this episode, three Year 9 girls face mounting pressure in their first year of GCSE preparation. Show more

Series following bright teenagers from low-income backgrounds across the UK. This episode features three 13-year-old boys on the cusp of adulthood and facing many uncertainties. Show more

Andre Geim reveals how his playful approach to research helped him uncover the properties of graphene, the world's thinnest material, and won him a Nobel Prize. Show more

Dallas Campbell delves into the Horizon archive to discover how scientists have tried to predict an impending apocalypse, and asks if science will save us when Armageddon arrives. Show more

The story of how the elements were discovered and mapped begins with the alchemists who questioned that the world was made up of earth, air, fire and water. Show more

Professor Jim Al-Khalili looks at how the early scientists' bid to decode the order of the elements was driven by false starts and bitter disputes. Show more

Jim Al-Khalili reveals the breakthroughs which harnessed elements' ability to release vast power, showing how scientists are trying to create new elements. Show more

After a decomposed body is found in a freezer at a waste disposal site, West Midlands Police must identify who it is and track down the person who concealed it. Show more

When 32-year-old Marlene Doyle, reported missing by her mother, is found murdered in a Coventry flat, police turn to forensic evidence to identify her killer. Show more

When a man confesses to killing his flatmate in self-defence, the police and forensic officers must investigate whether the victim was actually killed in cold blood. Show more

Jenny Clack recounts how she overcame setbacks before she found and described a fossil which offered new evidence of how fish made the transition onto land. Show more

A look back at the extraordinary odds doctors and patients have had to overcome to achieve amazing breakthroughs in transplant surgery. Show more

West Midlands Police work with ballistics experts to find out whether a man with a haul of rifles in his bedroom has used a 3D printer to make potentially deadly weapons. Show more

Marcus du Sautoy reveals a hidden numerical code that underpins all nature. He reveals how significant numbers appear throughout the natural world and govern the planet. Show more

Marcus du Sautoy reveals a hidden numerical code that underpins all nature. He uncovers the patterns that explain the shape of the world around us. Show more

Marcus du Sautoy contines exploring the numerical code that underpins nature. He discovers what the code can say about the future, starting with the lunar eclipse. Show more

Police mount urgent searches for two vulnerable autistic men. Eighteen-year-old Matthew has missed his usual bus home, while 29-year-old Luke has disappeared from his care home.

Police concern mounts for two men. Fifty-eight-year-old Gavin has vanished after giving away money, while a student has disappeared after joining a mysterious church. Show more

Police deal with two different missing people who both may be at risk. Mark has left a troubling note for his wife, while a potentially suicidal woman has vanished. Show more

South Yorkshire Police race against the clock to find two missing women, both of whom are at potential risk of harm from abusive ex-partners. Show more