Why is glass transparent? Why do cats purr? Why do men have nipples? These are but a handful of the thousands of questions that over the years have been asked and answered in The New York Times "Science Q&A" column. At last, the best and most interesting questions-and their replies-have been collected in a book for general readers. From wild animals to outdoor vegetation, from the human body to the heavens above, The New York Times Book of Science...