The moon is such a familiar presence in the sky that most of us take it for granted. But what if it wasn't where it is now? How would that affect life on earth?

The pygmy hippo is one of nature\\\'s last great mysteries. Solitary, secretive and extremely hard to find, scientists know almost nothing about this endangered animal in the wild and what it needs to survive.

A journey into the BBC archives unearthing glorious performances and candid interviews from the golden age of jazz. Featuring some of the greatest names in American music, including the godfather of New Orleans jazz Louis Armstrong, the King of Swing Count Basie, Duke Ellington, Oscar Peterson, Dizzy Gillespie and Ella Fitzgerald

Martin Durkin gets to know UKIP leader Nigel Farage, the man who\'s turning British politics upside down

Documentary marking the 30th anniversary of the 1984 miners\' strike, one of the bitterest industrial disputes in British history, with stories from both sides of the conflict.

Portrait of legendary comedian Richard Pryor which chronicles his life from his troubled youth to his meteoric rise as one of the most respected - and controversial - comic actors of the 20th century.

This episode focuses on films examining the changing shape of the British Empire. At a time when many of its former colonies were achieving independence, Look at Life sent its film crews as far afield as Aden, Malaysia and Ascension Island to record the efforts made by Britain to manage the transition from imperial rule to the leadership of an emerging Commonwealth.

Horizon goes behind the scenes at Nasa to discover how it is preparing for its most ambitious and daring mission: to land men - and possibly women - on the surface of Mars.

Professor Iain Stewart travels to Florida to try and understand what killed Jeff, and why the geology of this state makes it the sinkhole capital of the world.

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. Now they are being shown to help treat pain, depression and even alleviate some of the symptoms of Parkinson\'s disease. Horizon explores why they work, and how we could all benefit from the hidden power of the placebo.

Was the Great War a great mistake? In this innovative programme, Harvard historian Professor Niall Ferguson offers a different perspective on the First World War and argues that Britain\\\\\\\'s decision to enter the war was a tragic mistake.

In a single documentary to mark the 100-year anniversary of the outbreak of war, Sir Max Hastings presents the argument that although it was a great tragedy, far from being futile, the First World War was completely unavoidable.

Documentary about the development of the Boeing 747 jumbo jet. The 747 was a game changer; the airliner that revolutionised mass, cheap air travel. But the first, wide-bodied plane was (originally) intended as a stopgap to Boeing\'s now-abandoned supersonic jet.

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.