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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

Could land-dwelling octopuses develop technology? (Part 3)

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Could land-dwelling octopuses develop technology? (Part 3)

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R2YAK1 Professional washer in black uniform and cap wiping with sponge car wheel of a luxury car during the washing process outdoors

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Why are the front wheels of my car much dirtier than the rear ones?

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MNN37P Illustration comparing the planets of the Solar System and the Sun on the same scale. The planets are shown to scale relative to each other but their distances are not. From left to right the bodies are: the Sun, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune.

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Will there ever be a time when all our solar system’s planets align?

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T4AEYJ Stellar explosion shining in deep space, cosmic star blast in Universe. High resolution galaxy background.

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This week’s new questions

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Issue no. 3443 published 17 June 2023

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