91av

Last word

91av'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

3D illustration of A space station flies through the vastness of space. Spacecraft, spaceship design. High quality digital space sci-fi art in 5K - realistic visualization. Render; Shutterstock ID 2565680455; purchase_order: -; job: -; client: -; other: -

Last Word

What would the surface of a neutron star look like?

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2XHMJ3E Mixed breed dog running through grass with large stick in mouth

Last Word

Why do dogs bring back a stick if you throw it?

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Headshot of a 13 year old teenage girl with purple hair and braces. She is standing outdoors with buildings out of focus in the background. She is rolling her eyes and frowning slightly, a typical adolescent.

Last Word

This week’s new questions

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RBJEJN Woman talking to her baby lying on a bed at home. Mother caring and pampering her baby.

Last Word

Why do we speak to babies and pets in cute, silly voices? Part 2

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Issue no. 3564 published 11 October 2025

91av issue 3564 cover
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