Greece’s debt crisis

In March 1960, the South African police opened fire on a crowd of demonstrators in the township of Sharpeville, killing 69 people and injuring nearly 200 more. The massacre outraged black South Africans, leading to a radicalisation of anti-apartheid organisations such as the ANC and a ruthless crackdown on dissent by the whites-only government. Simon Watts hears the memories of Nyakane Tsolo, who organised the demonstration in Sharpeville, and Ian Berry, a photographer whose pictures of the killings caused an international outcry.PHOTO: The crowd fleeing from the police at Sharpeville in 1960 (Universal History Archive/UIG via Getty Images)

4 Mars 20219min

On 13 May 1985 a police helicopter dropped explosives on a house in residential Philadelphia, in an attempt to end a stand-off with radical black activists from an organisaton called MOVE. Fire spread quickly through the surrounding buildings and 11 people died, including five children. All the victims belonged to MOVE. A total of sixty houses in the area were also burnt or badly damaged in the botched police operation. Mike Lanchin speaks to Mike Africa, who lost his great uncle and a cousin in the fire, and to the former Philadelphia reporter, Linn Washington. Photo: Aerial view of smoke rising from smouldering rubble in Osage Avenue, West Philadelphia, May 1985 (Getty Images)

3 Mars 20219min

In 2001, boats carrying hundreds of, mainly Afghan, refugees arrived on the tiny Pacific island of Nauru. This marked the beginning of the “Pacific Solution” – a policy by the Australian government to establish offshore centres for processing asylum claims. The policy was intended to act as a deterrent, discouraging people from travelling to Australia. Many of the refugees lived in the cramped conditions of Nauru for years. In this Witness History, Josephine Casserly speaks to Yahya, an Afghan refugee who left his home country as a school student when the Taliban gained control of his local area. Yahya was one of the first refugees to arrive at Nauru’s detention centre. Like many, he was hopeful that his stay in the makeshift camp would be a temporary measure, and he’d be quickly resettled in Australia. But that was not to be.(Asylum seekers on their first day in the compound at Nauru after their long voyage, Sept 2001. Credit: Angela Whylie/Getty images)

2 Mars 20219min

Don Walsh was the first to go to the very bottom of the deepest part of the ocean in 1960 in a specially designed submarine, the Bathyscaphe Trieste. The water pressure was 800 tonnes per square inch, and the successful mission to "Challenger Deep" in the Mariana Trench under the western Pacific, was a technological breakthrough in marine engineering. Don Walsh describes the dive to Rebecca Kesby, and explains why understanding the deep ocean is crucial in the fight to reduce climate change. (Photo: The Bathyscaphe Trieste in 1960. Getty Images)

1 Mars 202110min

Johnny Smythe was one of very few West Africans to fly with Britain's air force during WW2. Recruited in Sierra Leone in 1941 he was trained as a navigator and flew 26 missions on RAF bombers before being shot down over Germany and taken prisoner in 1943. His son Eddy Smythe spoke to Tim Stokes about his father’s story.Photo: Johnny Smythe in his RAF uniform. Copyright: Eddy Smythe.

25 Feb 20219min

The Ghanaian president, Kwame Nkrumah, was one of Africa's most famous independence leaders. But in 1966, while he was out of the country, the Ghanaian military and police seized power in a coup. The legendary Ghanaian film maker Chris Hesse worked closely with Nkrumah and was with him at the time. He spoke to Alex Last about his memories of the coup and his friendship with the man who'd led Ghana to independence.Photo: Kwame Nkrumah c 1955 (Getty Images)

24 Feb 202114min

In the wake of the 2008 global financial crisis Ireland had to borrow billions to stop its banks from going under and to keep its economy afloat. The IMF, the EU and the European Central Bank provided the money. Matt Murphy has been speaking to Patrick Honahan, who was Ireland's central banker at the time of the bailout. Photo: Protesters take to the streets of Dublin in November 2010 to oppose savage public spending cutbacks needed to secure an international bailout. Credit:Ben Stansall/AFP via Getty Images

23 Feb 20218min

In the 1960s, Swedish scientists documented how acid rain was poisoning lakes, killing fish, damaging soils and forests. Crucially they said it was an international problem, because the acid rain was caused by industrial pollution being carried on the prevailing winds from countries thousands of miles away. Acid rain is primarily created by the burning of fossil fuels, particularly coal, which releases large amounts of sulphur dioxide and nitrogen oxides into the air. These particles then mix with moisture in the atmosphere to create sulphuric and nitric acid, which then falls back to earth as acid rain. The phenomenon of acid rain was noticed in the 19th century but the threat was largely ignored. Alex Last spoke to Prof Henning Rodhe of Stockholm University about the research that alerted the world to the dangers of acid rain.Photo: Forest decline caused by acid rain in the Giant Mountains in Poland - 1998 (Getty Images)

22 Feb 202112min