
BR Ambedkar
When Bhimrao Ramji Ambedkar was a schoolboy, he was not allowed to drink from the same tap as his fellow students because he was a member of what was then known as an "untouchable" caste. But he went on to become a prominent leader in the campaign for Indian independence and oversaw the writing of the Indian constitution - which made the idea of "untouchability" illegal. A hero to many, he died in December 1956.Lucy Burns hears recordings of BR Ambedkar from the BBC archives and speaks to biographer Ananya Vajpeyi.Picture: A member of the Indian Congress Party places flowers on a statue of BR Ambedkar to mark the 122nd anniversary of his birth in Amritsar on April 14, 2013 (NARINDER NANU/AFP/Getty Images)
21 Dec 20179min

The Exam That Changed China
When Chinese universities reinstated entrance exams in December 1977 it was a sign that the Cultural Revolution was really over. For the previous decade students had been judged on their political fervour, rather than their academic abilities. Wu Yuwen, was one of the class of 1977 and she's been speaking to Michael Bristow about her student experiences. Photo: Wu Yuwen in 1978, during her first year at Peking University. Credit: Wu Yuwen
20 Dec 20179min

The Development of WiFi
Australian scientists were central to the development of wifi. John O'Sullivan and David Skellern were among the group that gave us the ability to connect to the internet on-the-go. They've been speaking to Olga Smirnova about their breakthrough. Photo: WiFi prototype Photo credit: Richard Keaney / Radiata
19 Dec 20179min

Somalia's Islamic Courts Union
A controversial Islamic movement brought a brief moment of peace to Mogadishu in 2006 after years of war. The Islamic Courts Union (ICU) came to power after defeating rapacious American-backed warlords. They had no unified ideology or leadership. Some were moderates, some were hardline Islamists. But they brought law and order to the capital unseen since civil war began in 1991. But their rule would only last for six months and from the ashes would emerge the radical militant group Al-Shabab.Photo: Somalia's Supreme Council of Islamic Courts (SCIC) militia display their flag in front of Hotel Ramadan, in Mogadishu, 15, July 2006 (STRINGER/AFP/Getty Images)
18 Dec 20179min

The Disappearance of Harold Holt
The Australian Prime Minister, Harold Holt, disappeared after going for a swim in the ocean on December 17th 1967 - never to be seen again. Susan Hulme has been speaking to Martin Simpson who was with the group that went to the beach with the Prime Minister that day.Photo: Harold Holt on the beach with three women the year before his disappearance. Credit: Evening Standard/Getty Images
15 Dec 20179min

Otis Redding
In December 1967, the great American soul singer, Otis Redding, was killed in a plane crash as he stood on the brink of superstardom. Simon Watts introduces the memories of Otis’s guitarist, Steve Cropper, and trumpeter, Wayne Jackson, as recorded in the BBC archives.(Photo: Otis Redding in 1967)
14 Dec 20179min

The Great London Smog
Thousands died as a thick polluted fog engulfed London in 1952. People with respiratory and cardiovascular conditions were most at risk. The smog was a combination of pollution from millions of coal home fires and freezing fog. Unusual atmospheric conditions trapped the pall over the city for four days. The civil disaster changed Britain. Two years later, the government passed the Clean Air Act to reduce the use of smoky fuels such as coal. Alex Last speaks to Dr Brian Commins, who worked for the Medical Research Council's Air Pollution Unit set up at St. Bartholomew's hospital in London in the 1950s. Photo: A London bus conductor is forced to walk ahead of his vehicle with a flare to guide it through the smog, 9th December 1952. (Photo by Keystone/Hulton Archive/Getty Images)
14 Dec 20179min

The Unsung Hero of Heart Surgery
The African-American lab technician, Vivien Thomas, whose surgery helped save the lives of millions of babies but whose work went unrecognised for years. Claire Bowes has been listening to archive recordings of Vivien Thomas describing his long partnership with Dr Alfred Blalock, the man solely credited with inventing an operation in 1944 which helped manage a congenital heart defect called Tetralogy of Fallot. (Photo: Vivien Thomas, US Surgical Technician, 1940) (Audio: Courtesy of US National Library of Medicine)
13 Dec 20179min