Peter Atkins is Professor of Chemistry and Fellow of Lincoln College at Oxford University. He is the author of several world-famous chemistry textbooks. One reason why these continue to be leaders throughout the world after more than two decades is his remarkable gift for being able to explain things--especially challenging concepts--memorably and with great clarity. This gift has regularly been deployed in his books for the general reader (Richard Dawkins has described one of them, The Creation, as 'the most beautifully written popular science book ever'), but never to better effect than