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Horizon

Horizon

1964Returning Series61 Seasons1173 Episodes7.4TMDB
BBC Two

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

Season 42 Episodes

Browse every episode and jump into details.

Episode 1: Global Dimming

Jan 13, 2005 · 1h

Horizon producer David Sington on why predictions about the Earth's climate will need to be re-examined.

Episode 2: Einstein's Unfinished Symphony

Jan 20, 2005 · 1h

The unpredictable results of the Theory of Relativity. Horizon brings you the second part of a two-part series on Albert Einsten. In the summer of 1939 Albert Einstein was on holiday in a small resort town on the tip of Long Island. His peaceful summer, however, was about to be shattered by a visit from an old friend and colleague from his years in Berlin. The visitor was the physicist Leo Szilard. He had come to tell Einstein that he feared the Nazis could soon be in possession of a terrible new weapon and that something had to be done.

Episode 3: Einstein's Equation of Life and Death

Jan 27, 2005 · 1h

The story of Einstein's most famous equation E=mc² – its role in the creation of the atom bomb and our understanding of the beginnings of the Universe. Horizon brings you the second part of a two-part series on Albert Einsten. In the summer of 1939 Albert Einstein was on holiday in a small resort town on the tip of Long Island. His peaceful summer, however, was about to be shattered by a visit from an old friend and colleague from his years in Berlin. The visitor was the physicist Leo Szilard. He had come to tell Einstein that he feared the Nazis could soon be in possession of a terrible new weapon and that something had to be done.

Episode 4: Living with ADHD

Mar 3, 2005 · 1h

In this documentary, Horizon investigates Attention Deficit Hyperactivity Disorder (ADHD), which is one of the most feared and misunderstood of all medical conditions. Despite over 200 scientific papers being published on this neurological condition every year, it remains stigmatised and controversial. Some doctors don't even believe it exists. Yet it is estimated that as many as 3-5 percent of the childhood population, and over one million adults in the UK are affected by ADHD. These people are often described as stupid, lazy, disorganised, wild, out of control or woozy on drugs. But the reality is altogether more complex, and deeply moving.

Episode 5: Neanderthal

Feb 10, 2005 · 1h

Horizon investigates a strange skull that was discovered in 1848 on the military outpost of Gibraltar. It was undoubtedly human, but also had some of the heavy features of an ape... distinct brow ridges, and a forward projecting face. Just what was this ancient creature? And when had it lived? As more remains were discovered one thing became clear, this creature had once lived right across Europe. The remains were named Homo neanderthalensis (Neanderthal man) an ancient and primitive form of human.

Episode 6: An Experiment to Save the World

Feb 17, 2005 · 1h

In this documentary, Horizon follows the scientific world that was rocked by some astonishing news in March 2002 where a distinguished US government scientist claimed he had made nuclear fusion out of sound waves in his laboratory.

Episode 7: Who's Afraid of Designer Babies?

Feb 24, 2005 · 1h

This Horizon episode is about genetics in humans. Every parent wants their child to have the best in life. But would this extend to picking the best genes for them? To date, genetic technology has only been used to treat serious disease in children. But as ways are developed to manipulate our DNA, there are those who think that parents will inevitably want to choose their children's genes, and create 'designer babies'.

Episode 8: The Lost Civilisation of Peru

Mar 3, 2005 · 1h

Horizon brings us back two thousand years ago when a mysterious and little known civilization ruled the northern coast of Peru. Its people were called the Moche.

Episode 9: The Next Megaquake

May 22, 2005 · 1h

In this documentary on earthquakes, Horizon starts with the worst natural disasters of all time in December 2004. The cause of so much devastation was the most powerful kind of earthquake on the planet - a megathrust. Megathrust earthquakes only occur on a particular kind of fault. Scientists have now discovered that just such a fault could cause a huge megathrust earthquake and tsunami right off the coast of North America.

Episode 10: Does the MMR Jab Cause Autism?

May 29, 2005 · 1h

In this documentary, Horizon presents the largest public health issue of recent years that has attracted such heated debate as the question of whether the MMR vaccine can cause autism. The MMR jab combines three childhood vaccines, against measles, mumps and rubella, into one injection, which is first given to children at around 12-18 months. Horizon presents new, exclusive evidence about the MMR jab.

Episode 11: Malaria: Defeating the Curse

Jun 5, 2005 · 1h

This is the story by Horizon of an epic battle between science and nature. It's a battle to destroy a disease that is one of the biggest killers on the planet: malaria.

Episode 12: Tsunami: Naming the Dead

Sep 1, 2005 · 1h

How the biggest international forensic operation in history identified the victims of the most devastating natural disaster of recent times.

Episode 13: The Hawking Paradox

Sep 8, 2005 · 1h

Has Stephen Hawking been wrong about the universe for the last 30 years? Horizon explores his latest theory.

Episode 15: The Doctor Who Makes People Walk Again?

Oct 6, 2005 · 1h

At the Xishan Hospital, near Beijing, a remarkable medical pilgrimage is taking place. The sick and the dying are travelling here for a treatment pioneered by Dr Huang Hongyun. He claims he can restore functions that Western doctors said were lost forever. Horizon investigates his methods but are they too much too soon.

Episode 18: Titan. A Place Like Home?

Nov 10, 2005 · 1h

Over a billion kilometres away, Saturn's largest moon, Titan, holds tantalising clues to how life began here on Earth. Horizon tells the story of the Cassini-Huygens spacecraft, the most ambitious and expensive interplanetary space mission of all time.

Episode 19: The 7/7 Bombers: A Psychological Investigation

Dec 8, 2005 · 1h

On 7 July 2005 Britain experienced its first ever suicide attack. Four bombs exploded in central London, killing 52 people and injuring over 700. When Scotland Yard launched one of the biggest investigations in its history, another first was quickly uncovered: the suicide bombers were home-grown, they were young British men, attacking their own country. Horizon explores what makes someone want to blow themselves – and others - up?

Episode 20: The Ghost in Your Genes

Dec 15, 2005 · 1h

The controversial science of epigenetics suggests you may inherit a lot more than you imagine from your forebears. The scientists who believe your genes are shaped in part by your ancestors' life experiences.

Season 42 FAQ

Quick answers about this season's release timeline and episode lineup.

When did Horizon Season 42 premiere?

Horizon Season 42 premiered on January 13, 2005.

How many episodes are in Horizon Season 42?

Horizon Season 42 has 20 episodes.

What is the first episode of Horizon Season 42?

The season opens with Season 42 Episode 1, "Global Dimming". It aired on January 13, 2005.

Go to Season 42 Episode 1

Where to Watch

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