In October 1990, Professor Denys Brunsden of King's College, London, was one of the first Western scientists to confirm the shrinking of the Aral Sea. Dina Newman spoke to Prof Brunsden.

(Photo: Abandoned Ship in Aralsk, Kazakhstan. Credit: AFP / Getty Images)

In 1923 the entire cast of a Yiddish play was arrested in New York and charged with staging an immoral performance. Written by the celebrated Polish-Jewish writer Sholem Asch, 'God of Vengeance' is set in a brothel and deals with themes such as prostitution, religion and corruption. David Mazower, the playwright's great-grandson, speaks about the controversy.

(Photo: Sholem Asch, left, with Russian playwright Maxim Gorky,1920s. Courtesy of David Mazower)

In 1968, US troops in South Vietnam discovered the victims of a Communist offensive in the old imperial capital, Hue. Much of the city had been overrun by the North Vietnamese Army and Viet Cong guerillas during the Tet offensive. During the occupation, hundreds, possibly thousands, linked to the South Vietnamese regime were executed. We hear from Phil Gioia, from the 82nd Airborne Division, who discovered one of the first graves.

(Photo: A South Vietnamese woman mourns over the body of her husband, found with 47 others in a mass grave near Hue. Credit: AP)

When French-speaking separatists in the Canadian province of Quebec turned violent, Canada's government called the army onto the streets. Prime Minister Pierre Trudeau suspended basic civil rights and a stand-off ensued.

(Photo: A soldier guarding a street corner in Montreal in October 1970. Credit: Associated Press)

Bengali film director Satyajit Ray has been described as one of the most influential directors in world cinema, with acclaimed US director Martin Scorsese among those crediting him as an inspiration. Early on in his career, Satyajit Ray released the Apu trilogy. The series followed the life of a man Apu from his childhood growing up in rural Bengal to adulthood. The films garnered critical acclaim, winning many awards worldwide. Soumitra Chatterjee, the actor who played the title character in the final film, spoke to Witness about the legendary director.

(Photo: Satyajit Ray in 1989 during the ceremony where he was to be made a member of the Legion of Honour: Credit AFP/Getty Images)

In October 1943, at the height of World War Two, most of the Jews in Denmark evaded Nazi plans to send them to death camps. They were warned about a planned round-up by a German diplomat. Hear the story of Bent Melchior who was 14 years old when his family made the journey to safety in neutral Sweden.

(Photo: Bent Melchior, aged 15 and living in Sweden)

A Russian refugee, Olga Rossi-Hawkes, speaks to Dina Newman about life in Shanghai after her family fled the Russian revolution in 1917.

(Photo: Avenue Edward VII in Shanghai in 1930s. Credit: AP)

On 12 October 1915 a British nurse was executed by German troops during World War One. Her death made her a propaganda icon for Britain and its allies.

(Photo: Edith Cavell in 1890. Credit:Getty Images)

in 1965, Britain was shocked by a series of child murders. The children had been killed by a young couple, Ian Brady and his girlfriend Myra Hindley. They buried their victims in remote moorland in the north of England.

On 8 October 2005 a massive earthquake hit Pakistani-administered Kashmir. It left 87,000 people dead and more than four million homeless. Tariq Naqqash is a journalist based in Muzaffarabad, the city worst affected by the quake.

(Photo: Collapsed houses in Muzaffarabad. Credit: Associated Press)