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

A low angle action shot of a road cyclist approaching a smooth tarmac hill on a group ride around Seva, Catalonia, Spain.

Last Word

Why are the gears and chain always on the right‑hand side of bicycles?

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2FERAXY Crowded groups of people crossing the street at Times Square during rush hour

Last Word

This week’s new questions

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Would a tug of war be possible between France and England? (part 2)

Last Word

Would a tug of war be possible between France and England? (part 2)

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little hungry birds Tits on the bird feeder eating fat; Shutterstock ID 588202970; purchase_order: -; job: -; client: -; other: -

Last Word

Do birds have faster reaction times than humans?

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Issue no. 3433 published 8 April 2023

91av issue 3433 cover
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