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Max Pearson presents a collection of this week’s Witness History episodes from the Â鶹¹ÙÍøÊ×Ò³Èë¿Ú World Service.

We hear about a prehistoric discovery in India - a nest full of dinosaur eggs found in 1982. Plus, why a Mongolian dinosaur skeleton became the centre of a 2012 court battle in a case known as United States V One Tyrannosaurus Bataar.

Our guest, palaeobiologist Neil Gostling reveals how newly-uncovered dinosaurs are named, and tells us which fossilised beast was the first to be christened.

José Mujica recounts his journey from young revolutionary in the 1960s and 70s to becoming Uruguay's president in 2009. Plus, we learn more about the deaf children in Nicaragua who invented their own sign language. And find out why a treehouse built beside the Berlin Wall during the Cold War became a symbol of resistance.

Contributors:
Professor Ashok Sahni - palaeontologist
Associate Professor Neil Gostling - palaeobiologist
Dr Bolortsetseg Minjin - paleontologist
José Mujica - former president of Uruguay
Professor Judy Shepard-Kegl - linguist
Mehmet Kahlin – son of Osman Kahlin

(Photo: Tyrannosaurus Bataar skeleton, 2016. Credit: Johannes Eisele/AFP via Getty Images)