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This week’s new questions

Why do so many birds like standing on one leg? And as Earth spins, couldn’t we all travel by simply going up and waiting for our destination to come to us?

11 June 2025

2XH91PX Common redshank (Tringa totanus) in breeding plumage perched on one leg on wooden fence pole along meadow in summer

Arterra Picture Library/Alamy

Last Word is Âé¶¹´«Ã½â€™s long-running series in which readers give scientific answers to each other’s questions, ranging from the minutiae of everyday life to absurd astronomical hypotheticals. To answer a question or ask a new one, email lastword@newscientist.com

Why do so many birds like standing on one leg? And why don’t they fall over?

Alison Litherland

Cambridge, UK

Illuminated globe from inside spinning, colourful earth globe ; Shutterstock ID 555407242; purchase_order: -; job: -; client: -; other: -

danm12/Shutterstock

If Earth turns at (say) 1000 kilometres per hour at London’s latitude, when wanting to travel, why not just go straight up and wait for your destination to rotate around until it is beneath you?

Robert Morley

London, UK

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 telephone number and email address.

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