The Atom (3 parts)

In this three-part documentary series, Professor Jim Al-Khalili tells the story of one of the greatest scientific discoveries ever: that … More

The Secret Life Of Ice

Ice is one of the strangest, most beguiling and mesmerising substances in the world. Full of contradictions, it is transparent … More

Einstein’s Big Idea

Over 100 years ago, Albert Einstein grappled with the implications of his revolutionary special theory of relativity and came to … More

Absolute Zero

This two-part scientific detective tale tells the story of a remarkable group of pioneers who wanted to reach the ultimate … More

Understanding Time

Time – what is it? St. Augustine wrote, “What, then, is time? If no one asks me, I know. But … More

The Secrets Of Quantum Physics

Professor of physics Jim Al-Khalili investigates the most accurate and yet perplexing scientific theory ever – quantum physics. 01 Einstein’s … More

The Secret Life Of Waves

Documentary-maker David Malone delves into the secrets of ocean waves. In an elegant and original film he finds that waves … More

The Hunt For Dark Matter

CERN and the University of California-Santa Barbara are collaborating in the search for the elusive substance that physicists and astronomers … More

Everything & Nothing

Two-part documentary which deals with two of the deepest questions there are – what is everything, and what is nothing? … More

Light & Dark

Professor Jim Al-Khalili shows how scientists have used light to reveal almost everything we know about the universe. 01 Light … More

The Immortalist

The story of how one Russian internet millionaire is turning to cutting-edge science to try to unlock the secret of … More

The Secret Life Of Chaos

Professor Jim Al-Khalili shows how chaos theory can answer a question that mankind has asked for millennia – how does … More

The Science Of Sex Appeal

Take an up-close look at how genetics, hormones and neurological factors are believed to influence our sexual attraction levels to … More

Time Travel – The Truth

Physicists including Stephen Hawking and Michio Kaku discuss whether travelling through time could become possible, or if it will remain … More

The Science Of Laughter

Comedian Jimmy Carr takes over Horizon for this one-off special programme, produced as part of BBC2’s sitcom season. Jimmy turns … More

A Guide To Sex

Sex is a simple word for a very complex set of desires. It cuts to the core of our passions, … More

Parallel Universes

Everything you’re about to see here seems impossible and insane, beyond science fiction. Yet it’s all true. Scientists now believe … More

What Is Reality?

There is a strange and mysterious world that surrounds us, a world largely hidden from our senses. The quest to … More

Secret Of Water

Water – a living substance, the most common and least understood. It defies the basic laws of physics, yet holds … More

Cannabis – The Evil Weed

Cannabis is the world’s favourite drug, but also one of the least understood. Can cannabis cause schizophrenia? Is it addictive? … More

Drugged (4 parts)

This gritty, hard-hitting series offers drug addicts the chance to get clean by putting them through medical and psychological testing, … More

Inside LSD

Albert Hofmann called it “medicine for the soul.” Secret military mind control experiments exploited its hallucinogenic powers. Outlawed in 1966, … More