Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon - Pill Poppers

Pill Poppers

Drugs perform minor miracles day after day, freeing us from pain and disease. Take a tour through the world of pharmaceuticals and find out that drug discovery has as much to do with serendipity as it does science.
Horizon - The Truth About Violence

The Truth About Violence

What makes ordinary people commit extreme acts of violence? In a thought-provoking and disturbing journey, Michael Portillo investigates.
Horizon - What Makes Us Human?

What Makes Us Human?

Professor Alice Roberts sets out to discover the latest in scientific understanding about how to grow a human being, and what makes our species so special.
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 - How Big Is The Universe?

How Big Is The Universe?

In the past few years, astronomers and particle physicists have found new ways to probe the cosmos, all the way to the edge of existence, unlocking some surprising stories.
Horizon - What On Earth Is Wrong With Gravity?

What On Earth Is Wrong With Gravity?

Physicist Dr Brian Cox embarks on an adventure to discover why even the world's most famous scientists have not been able to unravel the darkest secret of the Universe.
Horizon - To Infinity And Beyond

To Infinity And Beyond

This is the story of infinity - older than time, bigger than the universe and stranger than fiction. Once you learn to count, in theory you could go on counting forever, but instead you enter a paradoxical world where nothing is as it seems.
Horizon - How Small Is The Universe?

How Small Is The Universe?

A mind-bending film that visits some of the biggest and most thrilling experiments on the planet in the search for the smallest objects in the universe.
Horizon - Is Everything We Know About The Universe Wrong?

Is Everything We Know About The Universe Wrong?

The latest in a long line of mysteries to threaten our understanding of the universe is dark flow - a strange force discovered in discarded data, whose implications are hotly disputed.
Horizon - Is Seeing Believing?

Is Seeing Believing?

Can you really believe your eyes? Horizon reveals some of the strangest illusions created by science to show how our natural senses really work... and how we could learn to manipulate them.
Horizon - Why Do We Dream?

Why Do We Dream?

In a series of cutting-edge experiments and personal stories, Horizon goes in search of the science behind this most enduring mystery and ask: where do dreams come from? Do they have meaning? And ultimately, why do we dream?
Horizon - What Is Reality?

What Is Reality?

What is the universe made of, how does it work? Welcome to a mind-bending world, full of wild frontiers, head-spinning paradoxes and brilliant illusions.
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 Secret World Of Pain

The Secret World Of Pain

We experience pain from the moment we are born until our dying breath. We spend our lives trying to escape it, yet it is essential for our very survival. Find out why some feel more pain than others, and meet the people who feel no pain at all.
Horizon - Placebo Power

Placebo Power

They are the miracle pills that shouldn't really work at all. Placebos come in all shapes and sizes, but they contain no active ingredient, so how we could all benefit from the hidden power of the placebo?
Horizon - Who Do You Want Your Child To Be?

Who Do You Want Your Child To Be?

Writer and comedian David Baddiel discovers how children think and asks: What are we educating our children for?
Horizon - Swallowed By A Black Hole

Swallowed By A Black Hole

For the first time in history, scientists will be able to observe the immense destructive power of a super-massive black hole. In so doing they hope to unlock some of the secrets of black holes, the most elusive objects in the universe.
Horizon - The Secret Life Of The Dog

The Secret Life Of The Dog

Dogs have been domesticated for longer than any other animal and humans have developed a unique relationship with their furry friends. We treat our pets like a part of the family, often like children, but are we more like our pets than we realise?
Horizon - Miracle Cure: A Decade Of The Human Genome

Miracle Cure: A Decade Of The Human Genome

Follow three people who hope the mapping of the human genome will transform their lives. Will the Human Genome Project change our relationship with ourselves forever?
Horizon - Before The Big Bang?

Before The Big Bang?

What came before the Big Bang? Take an incredible journey through mind-bending theories into the land before time.
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.