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Last word

×îÐÂÂé¶¹ÊÓÆµ's popular Last Word series gives readers the opportunity to answer each other's questions about everyday science phenomena, from the shape of scones to the evolutionary history of toenails. To answer a question or ask a new one, email lastword@newscientist.com

Issue no. 3518 published 23 November 2024

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