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The History Hour
The man who gave his voice to Stephen Hawking
The History Hour
Nov 30, 2019

The story of the American scientist Dennis Klatt who pioneered synthesised speech. He used recordings of himself to make the sounds that gave physicist Stephen Hawking a voice. Plus India:struggling to live through economic shock treatment in the 1990s, also LEO the first electronic office system, the first confirmed case of AIDS in America and when Uluru, Australia's famous natural landmark was handed back to the control of the country's indigenous people.

(Photo: BOMBAY, INDIA: World-renowned physicist Stephen Hawking answers questions with the help of a voice synthesiser during a press conference at the Tata Institute of Fundamental Research (TIFR) in Bombay, 06 January 2001. Credit AFP)

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Aug 15, 2026
The Mau Mau uprising and man-eating lions

Max Pearson presents a collection of the week's Witness History episodes focussing on Kenya.

We hear about Muthoni Kirima, one of the last Mau Mau fighters to come out of hiding and lay down her arms.

Caroline Elkins, Professor of History at Harvard University, discusses the brutality of the conflict between Kenya’s Land and Freedom Army, the British and Kenyan loyalists.

Next, when Princess Elizabeth became queen while staying at the Treetops Hotel, a lodge in the Aberdare National Park.

In 1997, scientists travelled to Kenya, in search of a cave believed to have been the den of the man-eating lions that terrorised railway workers in 1898.

Plus, we hear how Kenyan President Mwai Kibaki and his rival Raila Odinga signed an unprecedented power-sharing deal to end a wave of violence that left more than 1,200 people dead.

And the heartwarming story of the friendship between a baby hippo and a 130-year-old giant tortoise.

Finally for our Sporting Witness story, we head to the first Ultimate Frisbee World Championship in Gothenburg, Sweden in 1983.

Contributors: Caroline Elkins - Professor of History at Harvard University, and author of Britain's Gulag: The Brutal End of Empire in Kenya. Muthoni Kirima - Field Marshall in the Kenya Land and Freedom Army. Frank Gillard - BBC correspondent. Thomas Gnoske - Scientist. Alan Patterson - British Lieutenant Colonel John Henry Patterson's grandson. Maina Kiai - Chair of the Kenya National Commission on Human Rights in 2008. Maini Schildt - Swedish Ultimate Frisbee player.

(Photo: Mau Mau suspects are rounded up by police outside the camp in Manyani, Kenya, 1955. Credit: Getty Images/Authenticated News)


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The man who gave his voice to Stephen Hawking

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