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

2FWP497 Liquid iron molten metal pouring from ladle container into mold, industrial metallurgical factory, foundry cast, heavy industry background.

Last Word

Could there be an advanced technological society without iron?

Regulars

Cosmonaut in a futuristic dystopian city . Sci fi and virtual reality concept . This is a 3d render illustration . ; Shutterstock ID 2230705453; purchase_order: -; job: -; client: -; other: -

Last Word

What happens to our electronic cloud records when we die?

Regulars

BD5TB8 Alien and Older People, Cowes, Isle of Wight, England, UK, GB.

Last Word

This week’s new questions

Regulars

Issue no. 3531 published 22 February 2025

91av issue 3531 cover
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