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Witness History Clips

1. 'Our window into the universe'

   Duration: 04:04

2. The vaccine that saved millions of lives

   Duration: 04:09

3. The rebel nuns who left their convent behind

   Duration: 04:00

4. Art fights oil in Nigeria

   Duration: 04:12

5. One man's lonely journey across the ice

   Duration: 04:04

6. Birth of a new language

   Duration: 04:06

7. The ancient oak tree that taught the world a lesson

   Duration: 04:16

8. Risking my life to protect Congo's rainforest

   Duration: 03:58

9. Designing legs for speed

   Duration: 04:15

10. Murder in the Amazon

    Duration: 04:03

11. The fall of the Ceau葯escus

    Duration: 04:25

12. The shooting of Amadou Diallo

    Duration: 04:19

13. The British sculptor who became a world favourite

    Duration: 04:16

14. From cakes to computers

    Duration: 03:46

15. I saw the soldiers who killed El Salvador's priests

    Duration: 04:22

16. Iran hostage crisis: The students' spokeswoman

    Duration: 04:01

17. Tortured for siding with France

    Duration: 04:04

18. Iran hostage crisis: The humanitarian delegation's story

    Duration: 04:13

19. The man who fed the world

    Duration: 04:19

20. Saving the Great Barrier Reef

    Duration: 04:06

21. The day China became communist

    Duration: 04:10

22. Fighting the Islamic State group online

    Duration: 03:55

23. The world鈥檚 longest horse race

    Duration: 03:56

24. The black ballet pioneers

    Duration: 04:09