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Last word

New Scientist'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

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Last Word

Does life require Earth’s rate of rotation to lie in a certain range?

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Last Word

Should we genetically modify humans we send to Mars? Part 2

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Last Word

This week’s new questions

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Issue no. 3532 published 1 March 2025

New Scientist issue 3532 cover
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