Does Anything Eat Wasps? was the surprise Christmas bestseller of 2005, and put the 'popular' back into popular science. Why Don't Penguins' Feet Freeze? is a new selection of the best of the New Scientist's amazingly popular 'Last Word' column. Every week readers send in hundreds of questions in the hope that other readers will be able to answer them in the column. The result is a celebration of the trivial, idiosyncratic, baffling and strange - popular science at its most entertaining and enlightening.