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Dr Anjana Khatwa takes us on a journey through time
Time travel with earth scientist Dr Anjana Khatwa
Duration:
More clips from David FitzGerald
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How do you make yarn?
Duration: 04:41
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From little acorns grow mighty oaks.
Duration: 01:44
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Make A Difference Awards - the ceremony (part 2)
Duration: 03:59