Documentary AreaSimply the best Documentaries

Horizon uncovers the secret world of our dreams. In a series of cutting-edge experiments and personal stories, we go in search of the science behind this most enduring mystery and ask: where do dreams come from? Do they have meaning? And ultimately, why do we dream? What the film reveals is that much of what we thought we knew no longer stands true. Dreams are not simply wild imaginings but play a significant part in all our lives as they have an impact on our memories, the ability to learn, and our mental health. Most surprisingly, we find nightmares, too, are beneficial and may even explain the survival of our species.

In the final arc of the season, Nathan Fielder pushes the boundaries of simulated reality to a disturbing new level. What begins as a controlled exercise in human rehearsal quickly unravels, as the participants lose sight of where the performance ends and real life begins. Nathan’s interventions grow increasingly invasive, blurring the lines between creator and subject, until the emotional weight of the experiment turns on him. With each scene, the series peels back another layer of reality, revealing unsettling truths about identity, manipulation, and control. By the final episode, the line between authenticity and artifice collapses—leaving viewers questioning everything they’ve witnessed.

Groundbreaking missions and the latest research are finally uncovering the long-hidden secrets of Mars. From ancient water flows to possible traces of life, scientists are piecing together the planet's dramatic past. As powerful new technology scans its surface and atmosphere, experts confront extraordinary questions: Did Mars once support life? And could humanity one day make the Red Planet its second home? A stunning exploration into the evolving mysteries of our nearest planetary neighbor.

In the concluding episode of the series, Jim encounters ever larger cosmic structures to reveal the latest breakthroughs in our understanding of the universe. For example, Jim comes face to face with our galactic home, the Milky Way, a monstrous structure sculpted by the gravitational forces of dark matter. Jim finds out from pioneering researcher Adrian Fabian about the black hole at its centre, whose strange behaviour includes emitting the lowest note that can be heard in the cosmos.
At an even greater scale, Jim encounters huge structures such as the Laniakea Supercluster, of which the Milky Way is only a tiny part. Then there’s the 'Giant Arc', a collection of galaxies that account for more than three per cent of the observable universe. Jim learns from its discoverer, British PhD student Alexia Lopez, that this gargantuan structure is forcing scientists to reassess their theory of how the universe evolves and may overturn some of the most fundamental principles in physics.

This documentary tells the story a young polar bear's epic migration through the icy waters of Hudson Bay and his subsequent adventures on land, where he must spend the ice-free season. It is his first summer alone without his mother to guide and feed him. His struggle to survive is set against the biggest environmental story of our time: climate change. The stunning images were taken with more than eight different kinds of cameras including, for the first time, a polar bear collar-cam; a remote control Truck-cam; a mini Heli-cam, and several underwater cameras.

Daniel Radcliffe, Rupert Grint and Emma Watson join filmmaker Chris Columbus and other esteemed cast members across all eight Harry Potter films as they travel back to Hogwarts for the first time to celebrate the anniversary of the franchise’s first film, Harry Potter and the Sorcerer’s Stone, which premiered 20 years ago.
The retrospective will tell an enchanting making-of story through all-new in-depth interviews and cast conversations, inviting fans on a magical first-person journey through one of the most beloved film franchises of all time.