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Questions and Answers

Questions and answers should be restricted to scientific enquiries about everyday phenomena. The writers of all answers that are published will receive a £10 book token. IPC Magazines Ltd reserves all rights to use question and answer material submitted by readers. Send questions and answers to The Last Word, New Scientist, King’s Reach Tower, Stamford Street, London SE1 9LS (fax 0171 261 6464) or by e-mail to lastword@mail.newsci.ipc.co.uk (all correspondents must include their postal address).

Topics: Last Word