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A rare collection of Aboriginal stone tools showing technologies dating back 20,000 years will be displayed as part of a new exhibition at the University of Sydney. The display - with more than 600 treasured artefacts - examines the significance of the tools to Aboriginal culture and identity. First Nations students from the university were some of the first to view the exhibition. Nakari Thorpe caught up with them, at the Macleay Museum. There have been calls for a similar movement here in Australia, due to our own troubled racial history.