The second part, Nothing, explores science at the very limits of human perception, where we now understand the deepest mysteries of the universe lie. Jim sets out to answer one very simple question - what is nothing?

Engineer Jem Stansfield is used to creating explosions, but in this programme he uncovers the story of how we have learnt to control them and harness their power for our own means.

Dallas Campbell delves in to the Horizon archive to discover how our ideas about dinosaurs have changed over the past 40 years.

In this film, Professor Marcus du Sautoy explores one of the most dramatic scientific announcements for a generation. In clear, simple language he tells the story of the science we thought we knew, how it is being challenged, and why it matters.

Five of the world's top scientists present the revolutionary scientific inventions they believe could stop global warming and prevent worldwide disaster. Ideas include putting a giant glass sunshade in space to deflect a small portion of the sun's rays back into space and the firing ofrockets loaded with tons of sulphur into the stratosphere creating a vast, but very thin sunscreen of sulphur around the earth

In this episode Brian uncovers how the stunning diversity of shapes in the natural world are shadows of the rules that govern the universe. In Spain he shows how an attempt by hundreds of people to build the highest human tower reveals the force that shapes our planet.

Professor Brian Cox follows Earth's epic journey through space. He takes to the air in a top-secret fighter jet to race the spin of the planet and reverse the passage of the day.

In this episode, Professor Brian Cox shows how Earth's basic ingredients, like the pure sulphur mined in the heart of a deadly volcano in Indonesia, have become the building blocks of life. Hidden deep in a cave in the Dominican Republic lies a magical world created by the same property of water that makes it essential to life.

In this final episode Professor Brian Cox travels to Iceland, where the delicate splendour of a moonbow reveals the colours that paint our world, and he visits a volcano to explain why the sun shines.

Professor Brian Cox combines some of the most spectacular sights on Earth with our deepest understanding of the universe to reveal how the planet's beauty is created by just a handful of forces.

Dr Helen Czerski goes on a spectacular journey to the extremes of the temperature scale, where everyday laws of physics break down and a new world of scientific possibility begins.

Liz Bonnin joins a scientific team on an expedition across the Galapagos Islands to carry out important research that will help protect the islands and their inhabitants.

Liz Bonnin joins a scientific team aboard the research vessel the Alucia on an expedition across the Galapagos Island.

On the second leg of this incredible mission, Liz Bonnin and a team of scientific experts set off beneath the waves to explore this spectacular archipelago. It is an exciting opportunity for the team to delve into a world that still largely remains a mystery to science.

In the culmination of this 1,000km scientific expedition aboard the Alucia, Liz Bonnin and the team of scientific experts journey south to visit the oldest islands in the Galapagos to see first-hand the impact that humans have had on this pristine wilderness.

The first programme begins 350 years ago when a small group of friends, colleagues and rivals defied everything that was known about the world at that time.

The philosopher Friedrich Nietzsche was one of the most brilliant and dangerous minds of the 19th century. His uncompromising and often brutal ideas smashed the comfortable presuppositions and assumptions of religion, morality and science.

Following Great Ormond Street Hospital's doctors.

In the Bone Marrow Transplant Unit at Great Ormond Street Hospital, doctors strive to save the lives of children with life-threatening congenital diseases. They must attempt treatments which have very uncertain chances of success and can even threaten the lives of the children they are trying to save.

Great Ormond Street Hospital is the last chance for children in the UK whose lungs are failing because of cystic fibrosis and other conditions. In a few very severe cases each year, their only hope of survival is to undergo a radical and risky step - a double lung transplant.

Great Ormond Street is Britain's leading hospital for treating children with serious diseases of the brain - from tumours to epilepsy to rare neurovascular conditions. To save lives, doctors have no option but to undertake treatments which carry grave risks - children may be left with a mental impairment or may not even survive.

Climate activist Greta Thunberg takes a year off school to explore the science of global warming and challenge world leaders, calling for action on climate change.

What's really going on inside your stomach? In this documentary, Michael Mosley offers up his own guts to find out. Spending the day as an exhibit at the Science Museum in London, he swallows a tiny camera and uses the latest in imaging technology to get a unique view of his innards digesting his food. He discovers pools of concentrated acid and metres of writhing tubing which is home to its own ecosystem.

The heart is the most symbolic organ of the human body. Throughout history it has been seen as the site of our emotions, the very centre of our being. But modern medicine has come to see the heart as just a pump; a brilliant pump, but nothing more. And we see ourselves as ruled by our heads and not our hearts.

Immerse yourself in the lives of extraordinary characters that stand a few inches tall. From chipmunks to mice, be entertained and spellbound by the creatures that call the Hidden Kingdoms home.

This is the story of two young animals forced to grow up fast. In Africa's savannah, a baby elephant shrew learns how speed is the secret to survival amongst the largest animals on Earth; and in America, a young grasshopper mouse confronts the Wild West's deadliest creatures to stake a claim of his own.

This is the story of two tiny animals coming of age.

Child psychologist Laverne Antrobus delves into the Horizon archive to find out how science has shaped our approach to parenting and education over the last fifty years.

This episode looks at the issues that will change the way we live our lives in the future. Rather than relying on the minds of science fiction writers, mathematician Hannah Fry delves into the data we have today to provide an evidence-based vision of tomorrow. With the help of the BBC's science experts - and a few surprise guests - Hannah investigates the questions the British public want answered about the future.