For 10,000 years or more, humans created new plant varieties for food by trial and error and a touch of serendipity. Then 150 years ago, a new era began. Pioneer botanists unlocked the patterns found in different types of plants and opened the door to a new branch of science - plant genetics. They discovered what controlled the random colours of snapdragon petals and the strange colours found in wild maize.

The air we breathe, and all the food we eat, is created from water, sunlight, carbon dioxide and a few minerals. That\'s it, nothing else. It sounds simple, but this process is one of the most fascinating and complicated in all of science. Without it there could be no life on earth. It\'s that important.

Documentary filming the work of the neurosurgeons at Oxford's John Radcliffe Hospital over seven months and meeting the patients whose lives depend on their skill.

At Oxford's John Radcliffe Hospital, mum Adele has just heard the devastating news from brain surgeon Jay Jayamohan that her three-year-old daughter Cerys has a malignant brain cancer. This film follows Cerys's battle and shows other patients who are battling similar odds.

The brain is the most complex and mysterious organ in the body and the neurosurgeons of Oxford's John Radcliffe Hospital like Jay Jayamohan deal with brains which go badly wrong.

The parents of two year old Raj face an unimaginable dilemma. Ray has a brain tumour which, untreated, will kill him within months. Doctors at Oxford's John Radcliffe Hospital can operate but the surgery carries a high risk of paralysis.

Professor Stephen Hawking examines how science is striving for humankind's next leap forward

The team showcase breakthroughs in technology and engineering that are creating a new generation of machines.

The experts examine how scientists are fighting for our survival by battling the world's big killer diseases.

Science turns superhero as it battles to save the planet and preserve the human race.

The experts unearth the amazing breakthroughs that are transforming the resilience and strength of the human body.

With unique access to Nasa, Brian Cox follows Perseverance rover’s search for life on Mars during a critical seven-day period as it undertakes an epic journey across the red planet.

In the second of a two-part documentary, David Attenborough explores how much climate change is altering our planet, suggesting ways we can help.

David Attenborough asks three key questions: how and why did Darwin come up with his theory of evolution? Why do we think he was right? And why is it more important now than ever before?

The story of the race to the Moon, from the launch of Sputnik 1 in 1957 to Apollo 11, and the first man to set foot on the Moon, in 1969.

Documentary stories detailing America's determination to put a man on the moon ahead of Soviet Russia, beginning with how the launch of Sputnik 1 in 1957 compelled the USA to join the Space Race.

In little more than six months, America's John Glenn had matched Yuri Gagarin's feat of orbiting the Earth. But it was an event back on Earth that spurred America's ambition to win the Space Race.

On 27 January 1967, the disastrous failure of Apollo 1 risked the cancellation of America's space programme altogether.

Within two years of the Apollo 1 fire, Apollo 8 became the first manned mission to escape the Earth's gravity and orbit the moon

As Nasa chooses which astronauts will crew Apollo 11, the Soviet Union announces that it intends to schedule a mission to the moon of its own to coincide with America's lunar landing.

The success of Apollo 11 suggested the beginning of a new age of exploration. Instead, the lunar landing proved to be the highpoint of manned missions into space.

Series in which Jim Al-Khalili traces the story of how the elements, the building blocks that make up our entire world, were discovered and mapped

Series in which Jim Al-Khalili traces the story of how the elements, the building blocks that make up our entire world, were discovered and mapped.He follows in the footsteps of the pioneers who cracked their secrets and created a new science, propelling us into the modern age.

In part two, Professor Al-Khalili looks at the 19th century chemists who struggled to impose an order on the apparently random world of the elements. From working out how many there were to discovering their unique relationships with each other, the early scientists\' bid to decode the hidden order of the elements was driven by false starts and bitter disputes. But ultimately the quest would lead to one of chemistry\'s most beautiful intellectual creations - the periodic table.

In the final part, Professor Al-Khalili uncovers tales of success and heartache in the story of chemists' battle to control and combine the elements, and build our modern world. He reveals the dramatic breakthroughs which harnessed their might to release almost unimaginable power, and he journeys to the centre of modern day alchemy, where scientists are attempting to command the extreme forces of nature and create brand new elements.

Today, the topic of climate change is a major part of daily life, yet 40 years ago it was virtually unheard of. Since then, Horizon and the BBC have followed scientists as they have tried to unpick how the climate works and whether it is changing.

Helen Czerski goes in search of colour. She reveals what it is, what it does, and why colour doesn't exist outside of our perception.In the first episode, Helen seeks out the colours that turned planet Earth multicoloured. This is an HQ version.

The raw, early Earth had plenty of colour, but that was nothing compared with what was going to come next. That canvas was about to be painted with a vast new palette - and the source of those colours was life. Green is the colour of the natural world and yet it's the one colour that plants have evolved not to use.This is an HQ version.

We can't see in ultra violet, but many animals can. Helen explores what the world looks like to the birds and the bees. With the discovery of x-rays we could look inside ourselves in ways that previously had only been possible after death.This is an HQ version.

Helen Czerski goes in search of colour. She reveals what it is, what it does, and why colour doesn't exist outside of our perception. This is an HQ version.