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This week’s new questions

What could have caused these strange ice patterns on a glass door (pictured)? And are racehorses aware that they are expected to come first?

29 March 2023

Ice patterns on a door

Steve Williams

Why did these strange ice patterns form on a glazed door (pictured above)? They don’t appear on other glass from the same source.

Steve Williams,

Honing, Norfolk, UK

LIVERPOOL, ENGLAND - APRIL 09: win Randox Grand National Handicap Steeple Chase at Aintree Racecourse on April 09, 2022 in Liverpool, England. (Photo by Alan Crowhurst/Getty Images)

Alan Crowhurst/Getty Images

Are racehorses aware that they are expected to come first or are they just responding to the frantic urges of the jockey?

John Spencer,

Sydney, Australia

To answer this question – or ask a new one – email lastword@newscientist.com.

Questions should be scientific enquiries about everyday phenomena, and both questions and answers should be concise. We reserve the right to edit items for clarity and style. Please include a postal address, daytime…

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