Witness

In 1979 young revolutionaries stormed the US Embassy in Tehran. 52 Americans were taken captive and held hostage for 444 days. Barry Rosen was one of the hostages. In 2009 he told his story to Alex Last.This programme is a rebroadcast.Photo: Boy in camouflage points a toy pistol at an effigy of US President Carter during a demonstration outside the US Embassy, 18 November 1979. (Credit:STAFF/AFP/Getty Images)

In February 1979 an Islamic revolution began to unfold in Iran. The Islamic leader Ayatollah Khomeini, who had been in exile for 14 years, flew back to Tehran from Paris on the 1st of February. Mohsen Sazegara was close to the heart of events and in 2011 he spoke to Louise Hidalgo for Witness.Photo: Ayatollah Khomeini leaving the Air France Boeing 747 jumbo that flew him back from exile in France to Tehran.(Credit: Gabriel Duval, AFP/Getty Images.)

During the heat of Iran's revolution the country's top musicians decided to join the popular uprising. After the massacre of demonstrators by the Shah's armed forces in Jaleh Square in September 1978, state employed musicians went underground and started recording revolutionary songs. These songs became some of the most iconic in recent Iranian history. In 2015 Golnoosh Golshani heard from Bijan Kamkar about the musicians of the revolution.This programme is a re-broadcast.(Photo: Bijan Kamkar, on the far left, with a group of Iranian musicians. Courtesy of Bijan Kamkar)

Virago Press opened as a feminist publisher in 1972 to promote women's writing. Its founder, Carmen Callil, says she wanted both men and women to benefit from the female perspective. She tells Witness how she hoped to put women centre stage at a time when she and many other women felt sidelined and ignored at work and at home. Photo: Carmen Callil, 1983 (Photo by Peter Morris/Fairfax Media) Music: Jam Today by Jam Today courtesy of the Women’s Liberation Music Archive.

Pope John XXIII wanted to modernise the Catholic Church. In January 1959 he announced a council of all the world's Catholic bishops and cardinals in Rome. It led to sweeping reforms, including allowing the Mass to be said in languages other than Latin and an attempt to build relationships with other denominations and faiths. But not everyone was happy with the changes. Msgr John Strynkowski was a student priest in Rome at the time and told Rebecca Kesby about the excitement and controversy surrounding the council that became known as 'Vatican II'. (Photo; Pope John XXIII at the Vatican. Credit: Getty Images)

The comic film franchise which churned out movie after movie mocking British stereotypes and pomposity. The first Carry On film hit cinema screens in 1958 and the team behind it would go on to make more than 30 movies using slapstick comedy and sexual innuendo to win fans around the world. Ashley Byrne has spoken to writer John Antrobus and actor Valerie Leon. It was a Made in Manchester Production.Photo: Two of Carry On's biggest stars, Kenneth Williams(l) and Sid James (r) filming Carry On At Your Convenience in 1971. (Credit: Larry Ellis Collection/Getty Images)

Pramod Bhasin returned home to India in 1997 after working abroad for years. He spotted an opportunity to start a new industry that would revolutionise the country's economy. He tells Witness how he set up India's first call centre in spite of telecom challenges that might have put most entrepreneurs off.Photo: Pramod Bhasin in one of the call centres he started. Credit: BBC.

How one of the most notorious murderers in Edwardian London was captured as he fled to Canada. Listen to an astonishing BBC archive account of his arrest and hear from Dr Cassie Watson, a historian of forensic medicine and crime, about why the case of Dr Crippen lived so long in the public's memory. Photo: Dr Hawley Harvey Crippen (Getty Images)

In January 2006, London was entranced by the appearance of a large bottlenose whale in the Thames – the first such sighting for more than a century. Large crowds gathered to watch the whale swimming in front of the Houses of Parliament and many of the city’s most famous landmarks. But the whale’s health began to deteriorate and a team of specialist divers were called in to try – unsuccessfully – to save its life. Simon Watts talks to Mark Stevens, the man who organised the rescue attempt. PHOTO: The Thames Whale (Getty Images)

In 1976 South Asian women workers who had made Britain their home, led a strike against poor working conditions in a British factory. Lakshmi Patel was one of the South Asian women who picketed the Grunwick film-processing factory in north London for two years, defying the stereotype of submissive South Asian women. They gained the support of tens of thousands of trade unionists along the way. Lakshmi talks to Farhana Haider about how the strike was a defining moment for race relations in the UK in the 1970s.(Photo: Jayaben Desai, leader of the Grunwick strike committee holding placard 1977 Credit: Getty images)

Thousands of people flocked to the village of Tlacote in central Mexico in 1991. They were hoping to be cured by 'magical' water after rumours spread that it had healing powers. Maria Elena Navas has been speaking to Edmundo Gonzalez Llaca who was an official in the local environment ministry in 1991 and who was sent to Tlacote to check out what all the fuss was about.Photo: Hands under a stream of water (Getty Images)

Judy Garland ended her long and glitzy stage and screen career at a London theatre club in January 1969. She was booked for five weeks of nightly shows at the 'Talk of the Town', but by that time, the former child star of the 'Wizard of Oz' was struggling with a drug and drink addiction. Mike Lanchin has been hearing the memories of Rosalyn Wilder, then a young production assistant, whose job was to try to get Judy Garland on stage each night. Photo: Judy Garland on stage in London, December 1968 (Larry Ellis/Express/Getty Images)

Susie Orbach's best-selling book Fat is a Feminist Issue led many in the Women's Liberation Movement of the 1970s to rethink body-image from a feminist perspective. Millions of people have read the book, which is still in print four decades later. Susie Orbach explained to Rebecca Kesby how she came up with the idea, and why she is devastated that it is still selling copies.(Photo: Susie Orbach, author of Fat is a Feminist Issue. Credit: Getty Images)

A poor single mother of three, Carolina Maria de Jesus lived in a derelict shack and spent her days scavenging for food for her children, doing odd jobs and collecting paper and bottles. Her diary, written between 1955 and 1960, brought to life the harsh realities faced by thousands of poor Brazilians who arrived in cities like São Paulo and Rio looking for better opportunities. Her daughter, Vera Eunice de Jesus Lima, speaks to Thomas Pappon about how the book changed her family's life. Picture: Carolina Maria de Jesus in the Canindé Favela. Credit: Archive Audálio Dantas

In the last year of his rule Stalin ordered the imprisonment and execution of hundreds of the best Soviet doctors accusing them of plotting to kill senior Communist officials. Several hundred doctors were imprisoned and tortured, many of them died in detention. Professor Yakov Rapoport was among the few survivors of what was known as the 'Doctors' Plot'. His daughter Natasha remembers her family's ordeal in an interview with Dina Newman. Photo: Professor Yakov Rapoport, 1990s. Credit: family archive.

On January 8 1959 Fidel Castro and his left wing guerrilla forces marched triumphantly into the Cuban capital, ending decades of rule by the US-backed dictator Fulgencio Batista. It was the beginning of communist rule on the Caribbean island. Mike Lanchin spoke to Carlos Alzugaray, who was a 15-year-old school boy when he joined the crowds in the Cuban capital that turned out to watch the rebel tanks roll into town.(Photo: Fidel Castro speaks to the crowds in Cuba after Batista was forced to flee, Jan 1959. Credit: Keystone/Getty Images)

In January 2008, seeds began arriving at the world's first global seed vault, buried deep inside a mountain on an Arctic island a-thousand kilometres north of the Norwegian coast. The vault was built to ensure the survival of the world's food supply and its agricultural history in the event of a global catastrophe. Louise Hidalgo has been speaking to the man whose idea it was, American agriculturalist Cary Fowler.(Photo: journalists and cameramen outside the entrance of the Svalbard Global Seed Vault that was officially opened on 26th February 2008. Credit: Hakon Mosvold Larsen/AFP/Getty Images)

The discovery that proved Vikings had crossed the Atlantic 1000 years ago. In 1960, a Norwegian couple, Helge and Anne Stine Ingstad arrived in the remote fishing village of L'Anse aux Meadows on the tip of Newfoundland in Canada. They were searching for evidence of the Norse settlement of North America which had been described in ancient Norse sagas. What they found would make headlines around the world, and turn L'Anse aux Meadows into a World Heritage Site. Alex Last spoke to Loretta Decker who grew up in the village and now works as an officer with Parks Canada.Photo: Replicas of Norse houses from 1000 years ago at L'Anse aux Meadows. (LightRocket/Getty Images)

In the early 1980s the Romanian dictator Nicolae Ceausescu ordered the construction of a massive building in central Bucharest. Dubbed the "House of the People", it was to become the world's 2nd largest building. Now, decades after the fall of Communism, the building remains a lasting monument to the excesses of the dictator's totalitarian rule. Robert Nicholson speaks to Eliodor Popa, one of the architects behind the building. (Photo by Laszlo Szirtesi/Getty Images)

Dame Barbara Cartland was best known for her historical romances and is thought to have sold hundreds of millions of books around the world. She was step-grandmother to Princess Diana and was at her most prolific in the 1970s and 80s when she appeared regularly on British television. Kirsty Reid has been listening to some of her interviews from the BBC archives and hearing what it was like to meet her in person from Joe McAleer, author of Call of the Atlantic: Jack London's Publishing Odyssey Overseas.Photo: Barbara Cartland, pictured in 1970 (Credit: BBC)