Hormones shape each and every one of us, affecting almost every aspect of our lives - our height, our weight, our appetites, how we grow and reproduce, and even how we behave and feel.

Every day you make thousands of decisions, big and small, and behind all them is a powerful battle in your mind, pitting intuition against logic.Horizon uncovers the truth about how you really make decisions.

To answer the hottest question in nutrition, twin doctors Chris and Xand Van Tulleken go on month-long high-fat and high-sugar diets. The effects on their bodies are shocking and surprising.

In a purpose-built dissection lab, Dr George McGavin is joined by leading anatomy experts to dissect a real foot, taking it apart layer by layer to reveal what makes it unique in the animal kingdom.

In a purpose-built dissection lab, Dr George McGavin is joined by leading anatomy experts to dissect a real hand, taking it apart layer by layer to reveal what makes it unique in the animal kingdom.

BB King opens his heart and tells the story of how an oppressed and orphaned young man came to influence and earn the unmitigated praise of the music industry and its following to carry the title of king of the blues.

Second of a two-part documentary in which Jonathan Meades makes the case for 20th-century concrete Brutalist architecture, which is once again being appreciated by a younger generation.

Two-part documentary in which Jonathan Meades makes the case for 20th-century concrete Brutalist architecture in an homage to a style that he sees a brave, bold and bloodyminded.

Robert Peston travels to China to investigate how this mighty economic giant could actually be in serious trouble.

On the eve of the Sochi Winter Olympics, Russia is officially welcoming gay athletes and spectators. But in a country where it's thought only 1% of gay people dare to live completely openly, it appears to be a hollow gesture.

First-ever TV documentary about the legendary soul singer Otis Redding, following him from childhood and marriage to the Memphis studios and segregated Southern clubs where he honed his unique stage act and voice. Through unseen home movies, the film reveals how Otis's 1967 tour of Britain dramatically changed his life and music.

A selection of some of David Bowie's best performances from the BBC archives, which also features artists who Bowie helped along the way, such as Mott the Hoople, Lulu, Iggy Pop and Lou Reed.

Christine Lagarde, the first woman to head the International Monetary Fund, delivers the 2014 Richard Dimbleby Lecture. Charismatic and plain speaking, Lagarde explains her thinking on the challenges facing the global economy. Introduced by David Dimbleby from Guildhall in London.

Documentary which captures the moment when the Nobel Prize-winning dissident Aung San Suu Kyi took the huge, risky step into everyday politics in Burma. This tells Suu Kyi's extraordinary personal and political story, how she turned from Oxford housewife into national leader and then international icon of resistance.

Meet the stars of over-80s table tennis as they fight for medals in Mongolia. The inspirational documentary Ping-Pong, playing for the first time on Film4.

BAFTA award-winning director John Pilger presents a documentary detailing the plight of the Aboriginal population in Australia's poorest region, Utopia.

How blues conquered the world and the music moved from black to white audiences.

Blues is usually described as the sound of racial suffering and feeling sad, but this documentary argues that the blues began as a form of black pop music. First appearing in the Southern states of the USA around 1900, blues created by the poorest people in the richest nation on earth took America by storm.

A sharp, witty, mind-expanding and exuberant foray into the world of logic with computer scientist Professor Dave Cliff. Following in the footsteps of the award-winning 'The Joy of Stats' and its sequel, 'Tails You Win - The Science of Chance', this film takes viewers on a new rollercoaster ride through philosophy, maths, science and technology- all of which, under the bonnet, run on logic.

Documentary celebrating the extraordinary Professor Stephen Hawking, written and narrated by the man himsel

The British public school is an institution renowned the world over. In 1979, the BBC made a documentary series about life inside Radley College, one of the UK\'s most privileged and traditional boys\' boarding schools. In 2013, BBC director Hannah Berryman caught up with some of the boys who featured in the series to find out how their lives panned out after they left Radley.

A Panorama investigation reveals how police, politicians, lawyers and judges all played a part in burying the truth about Britain's worst football disaster.

The intriguing possibility of life on Mars has fuelled man's quest to visit the Red Planet. Drawing on 45 years of Horizon archive, space expert Dr Kevin Fong presents a documentary on Earth's near neighbour.

Documentary commemorating the 50th anniversary of Martin Luther King's March on Washington, a pivotal moment in the Civil Rights Movement in the United States. This programme tells the story of the how the march for jobs and freedom began, speaking to the people who organised and participated in it.

The final episode follows the changing fortunes of a heritage movement floored by the after effects of World War II and looks at how people like Sir John Betjeman and Dan Cruickshank gave families access to heritage and architecture on television from the comfort of their living rooms.

The second episode reveals the unsung heroes of the heritage movement, the clever civil servants who saved the great ruins of Britain. It explores the determination of Charles Reed Peers from the Office of Works, who seized the chance in the interwar years to make history a popular cause, and looks at how the increasingly mobile British public began to embrace the idea of a day out at an historic site.

Using state-of-the-art 3D graphics and the timing of a stand-up comedian, world-famous statistician Professor Hans Rosling presents a spectacular portrait of our rapidly changing world. With seven billion people already on our planet, we often look to the future with dread, but Rosling's message is surprisingly upbeat.

Speech-making is the art of persuasion. Well-honed rhetoric appeals not just to the mind, but to the heart and, deeper down, in the guts. Examining the speeches that provoked radical change, surprised pundits or shocked listeners, poet Simon Armitage dissects what makes a perfect speech.

It's a voyage of exploration like no other - to Titan, Saturn's largest moon and thought to resemble our own early Earth. For a small team of British scientists this would be the culmination of a lifetime's endeavour - the flight alone, some 2 billion miles, would take a full seven years. This is the story of the space probe they built, the sacrifices they made and their hopes for the landing.

James Hunt has never been equalled. Could swashbuckling Hunt catch the scientific Lauda? Could Niki overcome an appalling crash to come back from the dead and fight James all the way to the last race of the season?