Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon - Predators in our Backyard

Predators in our Backyard

Over the last few hundred years, humans have conquered animals that used to thrive in the wild. But a growing number of scientists are finding that in eliminating predators, we have damaged the environment. Their solution is simple, but terrifying.
Horizon - What Makes A Genius?

What Makes A Genius?

Are an elite few born to be geniuses, or does genius reside in each and every one of us? Meet a real genius and discovers a scientist who is electrically turbo-charging brains.
Horizon - Swallowed By A Sinkhole

Swallowed By A Sinkhole

Jeff Bush was asleep in bed when he and his entire bedroom disappeared into an abyss. Terrifyingly, there was no warning and Jeff's body has never been recovered. He had been swallowed by a sinkhole.
Horizon - Where Is Flight MH370?

Where Is Flight MH370?

The disappearance of Flight MH370 stunned the world. In an era of smart-phones and sat-nav, how could a passenger jet vanish into thin air?
Horizon - The Nine Months That Made You

The Nine Months That Made You

Research is revealing how everything from our risk of disease to our personality could be shaped by a mysterious world we have all experienced, yet none of us can remember - the womb.
Horizon - What's Wrong With Our Weather?

What's Wrong With Our Weather?

From killer tornadoes to deadly floods and chilling freezes, the world's weather is becoming more extreme. Scientists now believe they could have identified a natural phenomenon behind it. Meet the scientists trying to unlock the secret.
Horizon - My Pet Dinosaur

My Pet Dinosaur

What if dinosaurs hadn't become extinct? Would we eat them, farm them, love or fear them? Would we keep them as pets or have hunted them to extinction? Scientists think they can use established evolutionary theories to answer these questions.
Horizon - Why Do Viruses Kill?

Why Do Viruses Kill?

From Swine Flu to Sars, Yellow Fever to HIV, the number of dangerous viruses is increasing at an alarming rate so find out the truth about nature's greatest terror weapon.
Horizon - Tomorrow's World

Tomorrow's World

A dizzying journey into the world that science and technology are creating for us - welcome to the forefront of innovation. Meet the pioneers who are shaping the world of tomorrow and gets to the heart of what shapes innovation in the 21st century.
Horizon - Monitor Me

Monitor Me

With smartphone apps and consumer gadgets, we can all monitor more and more about our daily lives. Dr Kevin Fong finds out how this digital technology is bringing about a revolution in medicine.
Horizon - The Age Of Big Data

The Age Of Big Data

This is the Age of Big Data. From police using an algorithm to predict crime, to a mobile phone app that knows that you are unwell, to the man whose hedge fund uses cosmologists, code breakers and particle physicists. It's happening now.
Horizon - Are We Alone?

Are We Alone?

Horizon joins the planet hunters who have discovered a new world called Gliese 581c, which may have habitats capable of supporting life.
Horizon - Asteroids - The Good, The Bad and The Ugly

Asteroids - The Good, The Bad and The Ugly

Once seen as the least glamorous objects in the solar system, it now looks like asteroids could hold clues to how the Earth was formed, how life began and ultimately, how it will end.
Horizon - How Many Can Live on Earth?

How Many Can Live on Earth?

David Attenborough examines the problems presented by world population growth.
Horizon - Do I Drink Too Much?

Do I Drink Too Much?

Addiction expert John Marsden explores our relationship with alcohol.
Horizon - Man on Mars

Man on Mars

Getting to the red planet would involve a journey of at least three years. Meet the scientists and engineers working out how to overcome the problems associated with sending humans 56 million kilometres from earth.
Horizon - Global Weirding

Global Weirding

The weather is changing so fast that the new extremes being felt around the world might actually threaten human civilisation itself. Welcome to the new terrifying world of global weirding.
Horizon - Don't Grow Old

Don't Grow Old

A mysterious process is underway inside every cell of our bodies. It began before we were born and will ultimately lead to death and scientists don't understand why or how it happens.
Horizon - Death Of The Oceans?

Death Of The Oceans?

David Attenborough reveals how our actions are pushing the world's oceans ever closer to the brink of destruction.
Horizon - Chimps Are People Too

Chimps Are People Too

The closer research suggests that chimps and humans are to each other, the bigger our moral dilemma becomes. Horizon looks at the science and the issues surrounding this controversial revelation.
Horizon - Are You Good Or Evil?

Are You Good Or Evil?

What would it take for things to fall out of balance in our normal brains? Could we all become natural born killers? Horizon finds out just how delicately balanced our brains are.
Horizon - Do You Know What Time It Is?

Do You Know What Time It Is?

Time gives rhythm to the world around us. But how do we really know what time it is? Professor Brian Cox goes in search of the answer to a question you wouldn't give a passing thought.
Horizon - The Hunt for AI

The Hunt for AI

For the first time in history, machines are enabling us to be the masters of intelligence, providing a tantalising glimpse of what might one day be achieved. Could a machine could ever think like us, and what would that mean?
Horizon - The Evil Weed

The Evil Weed

Dr John Marsden searches for the truth about cannabis. Medicine or a dangerous narcotic?