The Bristol bus boycott

A group of Californian nuns left their convent and set up their own independent community in 1970. They’d been inspired by the social change they saw around them in Los Angeles in the 1960s, and the Pope's promise to modernise the Catholic Church. They wanted to stop wearing their traditional habit and abandon their set prayer times, but their conservative cardinal refused to discuss change. So three hundred of the sisters left to set up their own lay community – the Immaculate Heart Community, which is still running today. Former Sister Lucia Van Ruiten tells Witness History about the crisis they caused in the Catholic church. (Photo: Nuns from the Sisters of the Immaculate Heart of Mary play guitars at the Mary's Day parade, 1964. Courtesy of the Immaculate Heart Community)

26 Feb 20209min

In 1973, an engineer called Marty Cooper made the world’s first mobile phone call from a street in New York City. Cooper worked for a then tiny telecoms company called Motorola, but he had a vision that one day people would all want their own personal phone that could be reached anywhere. He talks to Louise Hidalgo.Picture: Martin Cooper in New York City in 1973 with the first prototype mobile phone (Credit: Martin Cooper)

25 Feb 20209min

In 1985, human remains were found by chance on a remote island in Antarctica by Chilean biologist Dr Daniel Torres. But whose were they? It would take years to determine their remarkable origin. We speak to Dr Torres about his discovery and how it revealed an unknown chapter of indigenous South American history.Photo: Skull discovered on LIvingstone Island, Antarctica in 1985 (D.Torres/INACH)

24 Feb 20209min

In October 1991, an international protocol to protect the world’s last wilderness, Antarctica, from commercial exploitation was agreed at a summit in Madrid. The agreement was the result of a long campaign by environmental organisations to stop oil and gas companies being allowed to explore the continent. Louise Hidalgo has been talking to Kelly Rigg from Greenpeace.Picture: Blue icebergs in Antarctica (Credit: Getty Images)

21 Feb 20209min

An insider's account of Project Babylon, the plan to build the largest gun in the world for Saddam Hussein's Iraq. The "Supergun" was the brainchild of Canadian artillery maverick, Dr Gerald Bull. He'd long wanted to build a gun capable of launching satellites into space. In the 1980s Saddam Hussein agreed to fund this plan. But was it a science project or a weapon? In 1990, the "Supergun" hit the headlines and it became an international scandal. Alex Last spoke to Chris Cowley an engineer who worked on Project Babylon,. Appropriately enough he has also become an author of thrillers. His latest book is called Without A Shadow.Photo: UN inspectors visit the site of the 350mm (baby) Super Gun in Iraq. After the Gulf War, the gun components were broken up and destroyed.(UN)

20 Feb 202014min

"Battle Bus" was a sculpture made by Sokari Douglas Camp in memory of Nigerian environmentalist Ken Saro Wiwa and eight other activists who were controversially executed in 1995. The sculpture was seized and impounded by Nigerian port authorities in 2015 when the art work was shipped to Nigeria. Sokari Douglas Camp talks to Rebecca Kesby about growing up in the Niger Delta and how it's shaped her art work. PHOTO: "Battle Bus" by Sokari Douglas Camp on show in London in 2015 (Sam Roberts Photography).

19 Feb 20209min

In 2002, scientists in the US began performing a landmark series of experiments on Buddhist monks from around the world. The studies showed that the brains of experienced meditators alter, allowing them to focus better and manage their emotions. Alejandra Martins talks to Professor Richard Davidson of the Center for Healthy Minds at the University of Wisconsin-Madison.PHOTO: A monk taking part in the experiment (Center for Healthy Minds).

18 Feb 202012min

In February 1990, the Nasa space probe Voyager took a famous photo of Earth as it left the Solar System. Seen from six billion kilometres away, our planet appears as a mere dot lit up by the Sun, and the image is credited with giving humanity a sense of our small place in the Universe. Darryll Morris speaks to Nasa planetary scientist, Candice Hansen, who worked on the Voyager programme. The programme is a Made-In-Manchester Production.Photo: The Earth seen as a pale blue dot in a band of sunlight (Nasa)

17 Feb 20209min