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Last word

Â鶹´«Ã½'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

an australopithecus, one of our ancestors; Shutterstock ID 790742188; purchase_order: -; job: -; client: -; other: -

Last Word

Is it known when humans or our ancestors first started to sing?

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Lola the Cat, behind a window, London

Last Word

This week’s new questions

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Battle cruiser approaching light speed in an outer space wormhole, 3d digitally rendered illustration; Shutterstock ID 91289105; purchase_order: -; job: -; client: -; other: -

Last Word

How long would it take to accelerate to 99 per cent light speed?

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Issue no. 3540 published 26 April 2025

Â鶹´«Ã½ issue 3540 cover
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