In one of the most controversial episodes of 'The Troubles' in Northern Ireland, UK soldiers fired on unarmed Catholic protesters, killing 13 in January 1972. We look at why British troops were there, what happened on that day, and how it further polarised Protestant Unionist and Catholic Republican communities. Successive UK governments insisted the soldiers had returned fire in self defence, until a public inquiry reported in 2010 that the soldiers had in fact fired first - and at fleeing, unarmed, protesters. The then Prime Minister, David Cameron, apologised on behalf of the government. We'll speak to former BBC Northern Ireland Editor, Eimear O'Callaghan, who as a teenager kept a diary of life in sectarian Belfast in the 1970s, later published into a book, and who reported for years on the struggle for peace.

Photo: A British soldier grabs hold of a protester by the hair. (Credit: AFP/Getty Images)

In 2009, Boko Haram, a small Islamist group, launched an insurgency in the north eastern Nigerian city of Maiduguri. The conflict would eventually force hundreds of thousands from their homes, and leave tens of thousands dead. We hear a witness account of how the violence started. Plus, this past week Americans have been observing the Martin Luther King Jr. Day national holiday. The long campaign to have Dr King formally recognized in the US was led by his widow, Coretta Scott King. We hear from her daughter, Dr Bernice King, about the campaign. We dip into the BBC archive to bring you the story of the notorious Stanford Prison Experiment. Also, from the 1980s, a time when many wanted to get out of East Germany and into the West, the young woman who decided to go the other way and set up a new life in the East. And the Dutchman behind the first bike sharing scheme.

Photo: A suspected Boko Haram house in Maiduguri set ablaze by Nigerian security forces, 30th July 2009 (AFP/Getty Images)

The Indian independence campaigner, Subhas Chandra Bose, sided with Hitler's axis powers in World War Two to try to free his country from British rule. We'll hear from his great-niece about why she thinks that if he had lived he could have changed the course of India's history. We'll also hear from Dr Shruti Kapila of Cambridge University about why India's current government is celebrating Bose. Plus a nuclear scientist tells us about his role in a secret project to make safe vast swathes of nuclear-contaminated land in post-Soviet Kazakhstan - as well as preventing nuclear material from falling into the wrong hands. Also, the reckless actions which led to the sinking of the Costa Concordia cruise ship, the first woman to have silicone breast implants and Malick Sidibé, the Malian photographer whose work altered people's perceptions about 1960s Africa.

Photo: Subhas Chandra Bose giving a speech in Nazi Germany in 1942.

Mozambique’s struggle to end Portuguese colonial rule and the assassination of Eduardo Mondlane, we'll hear from his daughter Nyeleti Brooke Mondlane and Dr Eric Morier-Genoud from Queen's University Belfast. Also, the brainwashing of Albanian youth under Stalinist Enver Hoxha's leadership, the fight for democracy in Taiwan and the worst ever loss of life at sea - the sinking of the German military transport ship, Wilhelm Gustloff in World War Two. All that plus, from the archives, the life and work of the celebrated French author Marcel Proust 100 years after his death.

PHOTO: Eduardo Mondlane in 1966 (Getty Images)

The inside story of games that shaped the modern world. Including Atari's Nolan Bushnell on his game Pong which helped launch the video game industry. Plus the origin of Grand Theft Auto, the man who invented Tetris, the son of the Lego brick pioneer and the true story of Monopoly. Max Pearson also talks to the technology journalist Louise Blain about the development of the huge gaming industry and where it goes next.

Photo: Pong being played at a retro games event in Germany (Getty Images)

A special edition on the Bangladesh War of Independence, which ended 50 years ago in December 1971. The conflict killed hundreds of thousands of people and redrew the political map of South Asia. The programme features first-hand accounts from leading activists and politicians, as well as the people caught up in the war - from a Pakistani soldier to one of the many Bangladeshi women who suffered appalling sexual violence.

There is expert analysis from Sabir Mustafa, the head of the BBC Bengali Service, and Witness History's Farhana Haider.

PHOTO: The flag of Bangladesh is raised at the Awami League headquarters in 1971. Credit: Getty Images.

It’s forty years since the first report on HIV/Aids appeared in a medical journal. Back in the early days in the 1980s a misunderstanding made one man the face of the epidemic. A Canadian air steward, Gaetan Dugas was mistakenly identified as ‘Patient Zero’. A misreading of scientific data had given the impression that he was responsible for the spread of the disease. We hear from people who knew him. Also one woman who was diagnosed in the 1980s tells us of the stigma at the time. And the discovery of the first successful treatment for HIV/Aids, as well as the story of how South African activists led the charge to make drugs widely available. And we hear from the former partner of the British film maker, Derek Jarman who was one of the first artists to speak openly about being HIV positive.

The three Mirabal sisters were leading figures in the Dominican Republic's opposition movement against the dictator General Rafael Trujillo. They were all killed on the 25th November 1960. We hear from the daughter of one of them, Minerva, who tells us about her family and from Professor Elizabeth Manley on the Mirabal sister's legacy in the Dominican Republic. Also in the programme, the last case of Smallpox in Europe, the woman who helped her mother to die and laid the groundwork for the Netherlands becoming the first country in the world to legalise euthanasia. Also how Estonia led the way on connecting up schools to the internet and the painting by Gustav Klimt which was stolen by Nazis and only returned to its Jewish owners after a lengthy legal battle.

Photo: The three Mirabal Sisters, Patria, Minerva and Maria Teresa (Credit: Mirabal family collection)

How in 1964 Sudanese civilian protesters first brought down a military regime, plus the hunt for former Serbian leader Radovan Karadžić later convicted of genocide and war crimes. Also in the programme, Russia's public outcry at the killing of human rights pioneer and leading female politician Galina Starovoitova in the 1990s, the birth of Cognitive Behavioural Therapy for anxiety and depression, and getting shot in the arm for the sake of 'art' in the USA.

Photo: People celebrate the fall of the military regime in Khartoum, November 1964 (Keystone-France/Gamma-Keystone via Getty Images)

In 2008, the brutal murder of Eudy Simelane shocked South Africa and highlighted the widespread violence faced by South African women and members of the LGTBI community. But has anything changed? We hear from a friend of Eudy and speak to Sibongile Ndashe, a South African lawyer and human rights activist. Plus, we look back at the massive oil fires in Kuwait in 1991, battling racial discrimination in British schools in the 1960s, Cold War intelligence gathering in East Germany and the invention of Chanel No.5, 100 years ago.

Photo: Eudy Simelane’s parents sat at the bridge named in their daughter’s honour. Credit: BBC