On 31 May 1970, the Huascarán avalanche, caused by the Ancash earthquake, destroyed the town of Yungay, in Peru. Only 400 people, out of a population of 18,000, survived. A clown, named Cucharita, saved approximately 300 children, who were at a circus performance, by leading them to higher ground. Rachel Naylor speaks to his son, Christian Peña. (Photo: Statue of Christ at the cemetery overlooking Yungay, after the avalanche. Credit: Science Photo Library)

On 25 May 1963, leaders of 32 newly-independent African nations came together for the first time in the Ethiopian capital Addis Ababa. At stake was the dream of a united Africa. In 2013, Alex Last spoke to Dr Bereket Habte Selassie who took part in that first gathering. (Photo: Haile Selassie, centre, and Ghana's first President Kwame Nkrumah, left, during the formation of the Organisation of African Unity. Credit: STR/AFP via Getty Images)

On 31 May 2013, a huge tornado hit an area close to El Reno in the US state of Oklahoma. It was the widest tornado ever recorded and produced extreme winds of more than 400 kilometres an hour. Eight people were killed, including three storm chasers. One of the people tracking the storm was Emily Sutton, a meteorologist with KFOR-TV in Oklahoma City. She’s a member of the station’s storm chasing team and was caught in the tornado. She tells Rob Walker about the impact that day had on her and other storm chasers. (Photo: Cars damaged by the El Reno tornado. Credit: Joe Raedle via Getty Images)

In August 1992, a shocking photograph of a starving, emaciated man behind a barbed wire fence of a Bosnian concentration camp stunned the world. The picture, taken from an ITN report was of a Bosniak Muslim called Fikret Alić. Reporter Ed Vulliamy was there when the photograph was taken. In this programme Ed reunites with Fikret and hears how the picture, which was published around the world, eventually helped Fikret flee to safety. This programme contains descriptions of sexual violence. It was produced by Anna Miles. (Photo: Fikret Alic in a Bosnian refugee camp. Credit: ITN/Shutterstock)

In 1980, a group of 16 army sergeants, led by Dési Bouterse, seized power in the small South American country of Suriname, overthrowing the government in a swift and violent coup d’état. The coup came just five years after the country was granted independence from the Netherlands. The country’s first president, Johan Ferrier, was forced to leave Suriname after the coup. Rosemarijn Hoefte, professor of the history of Suriname at the University of Amsterdam, and Johan Ferrier's daughter, Cynthia, have been sharing their memories of that time with Matt Pintus. (Photo: Johan Ferrier. Credit: Alamy)

In Stockholm in 1941, Astrid Lindgren made up a story for her seven-year-old daughter, Karin, about a young girl who lived alone and had super-human strength. Karin named her Pippi Långstrump, or Pippi Longstocking in English. Four years later, Astrid submitted her story into a competition and it won. Her book, Pippi Långstrump, was published and became an overnight success. It’s now been translated into more than 70 languages, as well as being made into more than 40 TV series and films. Rachel Naylor speaks to Astrid’s daughter, Karin Nyman. (Photo: Astrid Lindgren. Credit: Getty Images)

In 2011 a 3,000 km long walking trail was opened in New Zealand. Geoff Chapple had spent years lobbying for the creation of Te Araroa. He’d written articles in newspapers and tested out routes in the country's rugged landscape. The process of exploring where it could go sometimes put him in danger as he tells Alex Collins. (Photo: Geoff wading in the Waipapa River in the far north of New Zealand while on the Te Araroa trail. Credit: Amos Chapple)

In the early hours of 17 May 1943 a bold World War II attack destroyed two dams in the Ruhr Valley in Germany's industrial heartland, causing 1,600 casualties and catastrophic flooding which hampered the German war effort. The dams were highly protected but 617 Squadron of the Royal Air Force had a new weapon – the bouncing bomb. Invented by Barnes Wallis, the weapon was designed to skip over the dams' defences and explode against the sides. The Dambusters mission was a huge propaganda success for Britain and later inspired a famous film. In 2013, Simon Watts spoke to George "Johnny" Johnson, the last survivor of the Dambusters squadron. (Photo: Squadron Leader George "Johnny" Johnson. Credit: Leon Neal via Getty Images)

Beginning in 1940 thousands of German children were evacuated to camps in the countryside to avoid the bombs of World War Two. These camps were seen as safe places where they could continue their education but also where Nazi beliefs could be taught. Alex Collins has listened to archive recordings from "Haus der Geschichte der Bundersrepublik Deutschland" in Bonn one of Germany's national history museums and hears the stories of former camp residents Gunter Stoppa and Klaus Reimer. You may find some of the contents distressing. (Photo: German children being evacuated to Prussia. Credit: Getty Images)

In 1995, the execution of Flor Contemplacion caused protests, a government resignation and a diplomatic crisis between the Philippines and Singapore. Flor, who worked in Singapore, was convicted of killing another domestic helper, Delia Maga, and the four-year-old boy Delia looked after, Nicholas Huang. While Singapore stood by the conviction, millions of Filipinos believed Flor was innocent and had been let down by their government as an overseas worker. Flor’s daughter Russel Contemplacion, who was 17 at the time, and Flor's lawyer Edre Olalia give Josephine McDermott their account. (Photo: The coffin of Flor Contemplacion is carried to church prior to her funeral. Credit: Getty Images)

Peter Royle, 103, endured a month of solid fighting in the hills outside of Tunis in 1943. Eventually the Allies prevailed and took more than 250,000 German and Italian prisoners of war. They declared victory in Tunisia on 13 May. Peter came close to dying many times. He recalls how he once hummed God Save the King to prevent himself being shot by friendly fire. He was under the command of Field Marshal Bernard Montgomery, fresh from victory in the North African desert, and recalls him being inspirational to the troops. This episode is presented by Josephine McDermott. Ahead of the 80th anniversary of the end of World War II in 2025, the BBC is trying to gather as many first-hand accounts from surviving veterans as possible, to preserve for future generations. Working with a number of partners, including the Normandy Memorial Trust and the Royal British Legion, the BBC has spoken to many men and women who served during the war. We are calling the collection World War Two: We were there. (Photo: Peter Royle in battle kit in 1941. Credit: Peter Royle's family)

In May 1943, the uprising in the Jewish Ghetto in Warsaw in Poland came to an end. The Germans had crushed the uprising and deported surviving ghetto residents to concentration camps. Simha "Kazik" Rotem was one of the Jewish fighters who survived to tell his story. He spoke to Louise Hidalgo in 2010. (Photo: Warsaw Ghetto. Credit: HUM Images/Universal Images Group via Getty Images)

In 1998, one of Hong Kong’s best known landmarks, Kai Tak airport, closed after 73 years. Kai Tak, which was built between the mountains and the city, was world-famous for its unique landing approach that became known as 'the Kai Tak heart attack’. Captain Kim Sharman was the pilot of the last commercial flight out of Kai Tak. During his career he landed at the airport more than 1,000 times. Twenty-five years on he shares his memories with Gill Kearsley. (Photo: Boeing 747 landing at Kai Tak Airport. Credit: Russ Schleipman via Getty Images)

On 23 November 1942, in the middle of the Second World War, a ship called the SS Tilawa was carrying more than 950 passengers and crew from India to East Africa when it was sunk by Japanese torpedoes. Two hundred and eighty people died. The ship became known as the 'Indian Titanic'. Ben Henderson speaks to the last two known survivors, Arvind Jani and Tej Prakash Mangat. (Photo: Arvind Jhani and Tej Prakash Mangat. Credit: their families)

In 1999, NATO carried out a bombing campaign in Yugoslavia during the Kosovo War. On 7 May, five American bombs hit the Chinese embassy in Belgrade, killing three people and damaging relations between China and the West. Ben Henderson speaks to Hong Shen, a Chinese businessman, who was one of the first on the scene. (Photo: Protesters hold pictures of Chinese journalists killed in the embassy bombing. Credit: Stephen Shaver/AFP via Getty Images)

On Christmas Eve 1950, four young Scottish students took the 'Stone of Destiny' from Westminster Abbey in London. The symbolic stone had been taken from Scotland to England centuries earlier and had sat beneath the Coronation Chair in the abbey ever since. In 2018, Anya Dorodeyko spoke to the late Ian Hamilton who took part in the daring escapade in order to draw attention to demands for Scottish home rule. (Photo: Ian Hamilton. Credit: BBC)

In June 2001, more than half a century after being driven into exile by communists, Bulgaria’s former King Simeon II made a dramatic comeback by winning the country’s parliamentary election. In 2018, Farhana Haider spoke to Simeon Saxe-Coburg-Gotha about his remarkable journey from child king to prime minister. (Photo: Former King Simeon II of Bulgaria. Credit: Luc Castel/Getty Images)

In 1661 in England, following the restoration of the monarchy, the body of Oliver Cromwell was dug up for ritual execution. Cromwell had overthrown King Charles I and ruled as Lord Protector of England, Scotland and Ireland. In 2014, Vincent Dowd spoke to civil war historian Charles Spencer. (Photo: The death mask of Oliver Cromwell. Credit: Hulton Archive/Getty Images)

Jean-Bédel Bokassa crowned himself Emperor of the Central African Republic in a lavish ceremony on 4 December 1977. He'd already been president for several years since taking power in a military coup - but he wanted more. In 2018, Janet Ball spoke to his son Jean-Charles Bokassa. (Photo: Jean-Bédel Bokassa at his coronation. Credit: Pierre Guillaud / AFP via Getty Images)

In 2012, archaeologists from the University of Leicester discovered the lost grave of King Richard III under a car park in Leicester in the English East Midlands. Richard was the King of England more than 500 years ago and for centuries was portrayed as one of the great villains of English history. He was killed in 1485 leading his army in battle against a rival claimant to the throne, Henry Tudor. After the battle, King Richard III's corpse was stripped naked and paraded around before being hastily buried in a church within a friary in Leicester. In 2020, Alex Last spoke to Dr Richard Buckley who led the archaeological team that dug up the remains. (Photo: Remains of King Richard III. Credit: BBC)