Professor Jim Al-Khalili sets out to discover whether nuclear power is safe. He begins in Japan, at the former Fukushima nuclear plant, where he meets some of the tens of thousands of people who have been evacuated from the exclusion zone. He travels to an abandoned village just outside the zone to witness a nuclear clean-up operation. Jim draws on the latest scientific findings from Japan and from the previous explosion at Chernobyl to understand how dangerous the release of radiation is likely to be and what that means for our trust in nuclear power.

Dive into the gripping world of organized crime with the enthralling documentary series focusing on John Gotti, a name synonymous with the Gambino crime family. In this second installment, viewers are transported into the shadowy corners of mob life, exploring the brutal enforcement of mafia rules and the dire consequences of betrayal. Highlighting a chilling assignment carried out in Florida, the documentary captures the ruthlessness embedded within the mafia's code, where personal lives intertwine dangerously with business, leading to violent outcomes.
The episode also provides a fascinating look into the pivotal legal battles that defined Gotti's reign as a mafia boss. Witness the intense courtroom drama involving Diane Giacalone, the tenacious assistant U.S. Attorney, who took on Gotti and his associates in a high-stakes trial. Despite her efforts, the complexities of prosecuting organized crime come to the forefront, showcasing the challenges faced by law enforcement in penetrating the secretive and loyal underworld. This documentary is a must-watch for those intrigued by true crime and the intricate dance of cunning and law that shapes the world of organized crime.

The last installment of the series features a revealing first-person account that delves into the complexities of Gotti's mentorship and the stark realities of gang life. From a determined youth facing rejection from his father to his bold declaration to work for Gotti, witness the tumultuous ascent of Sammy ‘The Bull’ Gravano within the criminal underworld.
The narrative captures a pivotal confrontation, where Gotti chillingly outlines the dark path ahead, juxtaposed against the awe-inspiring backdrop of the Justice Department in Washington D.C., a symbol of the relentless pursuit that future gangsters will inevitably face. This episode doesn’t just recount events; it places you at the heart of an ongoing battle against organized crime, providing an intimate look at Gotti’s life, from his rise to power to his ultimate indictment and the intense legal battles that followed. Dive into a gripping exploration of loyalty, power, and the consequences of a life in the mafia.

Dr. Thomas Asbridge introduces the epic story of the Crusades – a tale of religious fanaticism and unspeakable brutality, of medieval knights and Jihadi warriors; of castles and kings; of heroism, betrayal, and sacrifice. He explains how, using fresh evidence, eye-witness testimonies and contemporary accounts – from both the Christian and Islamic worlds – we are able to re-examine this epic medieval drama, and how he has retraced the steps of the Crusaders from a small town in France to the magnificent cities of the Holy Land, bringing to life the human experience of the Crusades, and shedding new light on how it was that two of the world’s great religions waged war in the name of God.

To celebrate the 30th anniversary of its launch, this film tells the remarkable story of how the Hubble Space Telescope revealed the awe and wonder of our universe and how a team of daring astronauts risked their lives to keep it working.
Additionally, a team led by Greg Bacon and Dr Frank Summers has transformed many of Hubble's most awe-inspiring images into visualisations - from the spectacular Orion Nebula to the fabulous Whirlpool Galaxy and ethereal Horsehead Nebula. One of the most mind-blowing of the visualizations takes the viewer on a remarkable journey, flying across the Universe to witness almost 13 billion years of cosmic evolution. It's called the 'Hubble Ultra Deep Field' and was created when Hubble stared at a small patch of sky for the equivalent of more than 11 days to see some of the most distant galaxies ever observed.

A new force threatens our perfect planet. In the past, five mass extinction events were caused by cataclysmic volcanic eruptions. It was not the lava or ash that wiped out life, but an invisible gas released by volcanoes: carbon dioxide. Almost every part of modern life depends on energy created by burning fossil fuels, and this produces CO2 in huge amounts. Humans are changing our planet so rapidly, it’s affecting earth’s life support systems: our weather, our oceans and the living world. The greatest change to be made is in how we create energy, and the planet is brimming with natural power that can help us do just that. It’s these forces of nature - the wind, the sun, waves and geothermal energy - that hold the key to our future.
Through compelling animal-led stories and expert interviews, we discover how CO2 is destabilising our planet. We meet rescued orphaned elephants in Kenya, victims of ever worsening droughts, and join ocean patrols off the coast of Gabon fighting to save endangered sharks. In the Amazon, we witness wildlife teams saving animals in the shrinking forests, and in San Diego we enter a cryogenic zoo preserving the DNA of endangered species before they become extinct.