Does Anything Eat Wasps?

How long can I live on beer alone? Why do people have eyebrows? Has nature invented any wheels? Plus 99 other questions answered. Every year, readers send in thousands of questions to New Scientist , the world's best-selling science weekly, in the hope that the answers to them will be given in the 'Last Word' column - regularly voted the most popular section of the magazine. Does Anything Eat Wasps? is a collection of the best that have appeared, including: why can't we eat green potatoes; why do airliners suddenly plummet; does a compass work in space; why do all the local dogs howl at emergency sirens; how can a tree grow out of a chimney stack; why do bruises go through a range of colours; and, why is the sea blue inside caves. Many seemingly simple questions are actually very complex to answer. And some that seem difficult have a very simple explanation. New Scientist 's 'Last Word' celebrates all questions - the trivial, the idiosyncratic, the baffling and the strange. This selection of the best is popular science at its most entertaining and enlightening.