An hour of first hand accounts from the past. Starting with a crackdown on opposition voices in Eritrea from twenty years ago, plus memories of the 1956 Hungarian uprising, the Nuremberg trials, a breakthrough in orthopaedics, and how the fictional character Fu Manchu prejudiced popular opinion against China and the Chinese for decades.

To mark the start of the UN Climate Change Conference, or COP26, taking place in Glasgow in the UK, we’re looking back at the history of our awareness of climate change with some of the scientists and activists who have been trying to solve this global crisis in recent decades. We hear from environmental activist Severn Cullis-Suzuki, who was just 12 years old when she implored world leaders to take action, at the 1992 UN Earth Summit in Rio De Janeiro. Plus, how a pioneering American scientist provided compelling evidence of man-made global warming back in the 1950s, and measuring melting glaciers at the top of Mount Kilimanjaro in Tanzania.

Photo: Severn Cullis-Suzuki (2nd left) and her friends at the Earth Summit in Rio in 1992. Courtesy of Severn Cullis-Suzuki.

The anti-nuclear weapons protest began in 1981 and lasted nineteen years. Also the first transgender priest in the Church of England, WW2 Polish refugees in Africa, plus why lesbian mothers caused such a stir in the 1970s and was the untimely death of Mozambique's President Samora Machel an assassination?

Photo: Women from the Greenham Common peace camp blocking Yellow Gate into RAF Greenham Common , 1st April 1983 . (Photo by Staff/Reading Post/MirrorpixGetty Images)

As part of our British black history coverage we look back at the racism faced by London's first black policeman from his own colleagues. We also hear about the death in police custody of black ex-soldier Christopher Alder. Plus, the intriguing story of a Somali sailor based in the UK in the early 20th century; the heartbreak faced by the children of black American soldiers and white British mothers during World War Two; and the story of Clyde Best, Britain's pioneering black footballer. Presenter Max Pearson also hears from Dr Martin Glynn of Birmingham City University's Black Studies course.

In 1971 photographer Claudia Andujar began documenting the lives of a remote indigenous tribe in the Brazilian Amazon jungle. Her photographs helped the campaign for recognition of the Yanomami's rights over their own land. Chris Feliciano Arnold, writer and reporter specializing in the Amazon, describes the new threats facing the many indigenous communities in the region. Plus, remembering Petra Kelly - one of the influential founders of the German Green party, tracing the birth of the Taliban, and a survivor of of the Tanker Wars in the 1980s describes the moment his ship was attacked.

Photo:Antônio Korihana thëri, a young man under the effect of the hallucinogenic powder yãkoana, Catrimani, 1972-1976. © Claudia Andujar

Eyewitnesses remember the Westgate mall attack in Kenya, the 1990s 'miracle water' craze in Mexico, and the poisoning of Alexander Litvinenko. Plus the amazing story of how a journalist revealed the secret romance between Aristotle Onassis and Jackie Kennedy, and we look back at the changing nature of James Bond.

Photo: A police officer at the site of the terrorist attack, Westgate Mall, on September 21, 2013 in Nairobi, Kenya.. (Photo by Jeff Angote/Nation Media/Gallo Images/Getty Images)

In 2010 the Haitian capital and surrounding areas were hit by a catastrophic earthquake. Much of Port Au Prince was flattened and more than a hundred thousand people were killed. Amid the destruction and death people's first instinct was to pull together and help one another. A survivor describes what happened after his family home collapsed around him. Plus, a prisoner who took part in the dramatic Attica prison uprising of 1971, the professor who used DNA to unravel a 200-year-old royal mystery from France, and one of the first settlers of Copenhagen's famous hippy commune, Christiania.

Photo: Men gather to try to reach those still buried in the rubble beneath the Haitian Department of Justice building in January 2010.(Photo by Carolyn Cole/Los Angeles Times via Getty Images)

In a special edition on the terrorist attacks on America, we hear from the White House official who broke the news to the President and a Muslim first-responder who worked at Ground Zero. Plus, personal memories of the US intelligence failures in the run-up to 9/11 and the bombing of Afghanistan which followed. We also get a dramatic first-hand account of the death of Ahmed Shah Massoud, the leader of the Afghan resistance against the Taleban, who was killed by an al-Qaeda suicide bomber on the eve of the attacks on New York and Washington. And former BBC diplomatic correspondent Jonathan Marcus joins us to analyse the war on terror and the gains made - or not made - in the twenty years since a day which changed the world.

Photo: Smoke pours from the World Trade Centre after it was hit by two passenger planes on September 11, 2001 in New York City. (Credit: Robert Giroux/Getty Images)

When South Vietnam fell in 1975, most could not escape. In the last days, the US airlifted its remaining personnel and some high ranking Vietnamese officials - but millions were left behind to await their fate. Hear the account of one South Vietnamese veteran who remained in Saigon as North Vietnamese forces took the city. Also on the programme: the 1990s electric car that was taken out of production, we go up close with North Korea's Kim Il Sung, the Gdansk shipyard strike in Poland, and the Sicilian businessman who tried to defy the Mafia.

Photo: A South Vietnamese soldier helps his wounded friend during fighting with communist forces in Saigon, 28th April 1975 (Bettmann/Getty Images)

Fang Lang was one of six Chinese men who survived the sinking of the Titanic in 1912. The six faced racism and a hostile immigration system when they reached America. Unlike other survivors, their stories remained untold for decades. We hear from Fang Lang's son Tom and Arthur Jones whose documentary called The Six tells the story of those six Chinese survivors. Also John Maynard Keynes, the economist who transformed the world, changing attitudes in Mexico towards disabled women plus Nigeria’s war against indiscipline in the 1980s and the contested legacy of one of the most revered Arab poets of the twentieth century.

Photo: Tom’s father, Fang Lang. Credit: LP Films.