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So much in the universe spins. Could the universe itself be spinning?

Murray Lang,

Perth, Western Australia

When I read a word that I don’t know how to pronounce, I can’t remember it. Why do I need to be able to pronounce a word for my brain to recall it?

Fay Davies,

Bury, Greater Manchester, UK

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

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