Flex your mussels! Paris' purple Olympic track is made from ground-up sea shells - and experts say it could be up to 2% faster than the track at the Tokyo 2020 Games

3 months ago 46

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3. Flex your mussels! Paris' purple Olympic track is made from ground-up sea shells - and experts say it could be up to 2% faster than the track at the Tokyo 2020 Games