The Arctic is the harshest environment on Earth: little food grows, it's dark for months on end, and temperatures stay well below freezing for much of the year. Yet four million people manage to survive here. Human Planet tells remarkable stories of extraordinary people who make their homes in nature's deep freeze. In springtime, Amos and Karl-Frederik set out across the sea ice with their dogs to catch a real-life sea monster: a Greenland shark! Inuit mussel-gatherers venture underneath the sea ice at low tide for a perilous race against time as they gather their food. And the children of Churchill, Manitoba, set out on the most dangerous trick or treating Halloween in the world: they risk coming face-to-face with deadly polar bears on the streets of their town. Who'll get the tastiest snack?

With much of it covered in ice all year round and with no daylight from October to March, the Arctic Ocean is one of the world's most remarkable oceans. Its home to a multitude of unique life forms, all highly adapted to cope with the extreme and seasonal conditions. The impacts of climate change are more strongly felt here than anywhere else in the world.

Of all the diseases that plague humankind, malaria has put up one of the longest, toughest fights. More than 200 million people fall ill and 600,000 die of it every year, making it among the world’s deadliest diseases. The vast majority of those fatalities are young children - an average of one child every minute. But medical science may now be at an exciting turning point.
Filmed with intimate access to key scientists on four continents, this documentary tells the inside story of the development of a new malaria vaccine that could change the very nature of the fight. It's hoped that the vaccine, dubbed R21/Matrix-M and developed by many of the same team behind the Oxford/AstraZeneca Covid-19 vaccine, will be the first to meet the World Health Organization’s target of 75 per cent efficacy.

Professor Brian Cox visits Geneva to take a look around Cern's Large Hadron Collider before this vast, 27km long machine is sealed-off and the experiment to create the simulation of a black hole begins. When it's up and running, it will be capable of creating the conditions that existed just a billionth of a second after the Big Bang. Brian joins the scientists who hope that the LHC will change our understanding of the early universe and solve some of its mysteries.

As almost all animal inhabitants of Antarctica are forced to migrate north, the sea underneath the frozen ice still provides a home to many specially adapted fish whose cells are protected from freezing through an 'antifreeze' liquid. Many of them feed on the faeces of other animals. The most notable larger animal that does not migrate north is perhaps the Weddell Seal, which can be found as close as 1300 kilometres to the pole. Groups of seals tear holes into the ice to dive for food and come up to breathe. The females come back to the ice to give birth. This episode also describes primitive plant life such as lichen, which can still be found on the continent in winter, even in the extremely dry and permanently frozen valleys conditions under which dead animals can lie frozen for many centuries without decomposing. It details the life of the Emperor Penguin, 'the only birds to lay their eggs directly on ice'. While other animals retreat, Emperors migrate not just to the ice, but into the Antarctic continent. The females lay eggs which are incubated by the males under the harshest conditions on Earth (huddling closely together for warmth), while the females return to the sea.

In an enthralling documentary, Dan Snow and archaeologist Raksha Dave delve into the catastrophic impact of the Black Death on Britain 700 years ago, a pandemic that extinguished around half of the population, or three million people. The duo embarks on a journey to trace the origins and merciless spread of the plague, starting from its arrival on Britain's South coast in June 1348, through the bustling trade routes that brought the disease to Melcombe Regis, Dorset. Their investigation takes them to various hotspots of the outbreak, including the Old Operating Theatre in London and Wildwood Animal Sanctuary in Kent, where they explore the role of rats in dispersing the bubonic plague. Through dramatic reconstructions and visits to places like Nottingham University's biomedical laboratories, they uncover the rapid spread and deadly impact of the plague, offering a month-by-month account of how it ravaged the country, decimating cities, towns, and villages alike.
The documentary not only showcases the horrific symptoms and desperate attempts at cures through brutal medical practices of the time but also leverages cutting-edge research to explain why the Black Death remains the deadliest pandemic in history. The personal stories of victims, from princes to paupers, are brought to light, revealing the indiscriminate nature of the disease. Dan's visit to Canterbury Cathedral and Raksha's investigation into the recent discovery of mass graves beneath a tranquil London square underline the widespread desperation and devastation. Their journey through the history of the Black Death, culminating in the discovery of its indiscriminate toll and the unveiling of mass graves in London, not only sheds light on the darkest chapters of British history but also ignites a profound understanding of the tragedy, making a compelling case for why this documentary is a must-watch for anyone interested in the profound impacts of pandemics on human society.