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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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Why do dogs bring back a stick if you throw it? Part 2

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Asteroi?d impact. The doomsday and extinction scene. Meteor hits the planet at high speed. ; Shutterstock ID 2645714679; purchase_order: -; job: -; client: -; other: -

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Could a massive asteroid that hit Mars or the moon affect Earth?

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The Garden spider is the UK's most common orb web spider and is abundant in gardens, grassland and woodland

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If I walk through a spider’s web, what are its chances of survival?

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Sao Paulo, Brazil - November 26, 2015: Intense traffic in the Consolacao avenue, Sao Paulo, Brazil. It shows the dynamics of the traffic in that busy spot.; Shutterstock ID 347285747; purchase_order: -; job: -; client: -; other:

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This week’s new questions

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Issue no. 3565 published 18 October 2025

New Scientist issue 3565 cover
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