The internet and other digital technologies have transformed our world, yet many of us have little or no understanding of how they work. This book explains it all, from binary code to interactive TV, and surveys the changes just around the corner. This stimulating new series uses an innovative mix of graphics, artwork, and photographs to explain and illuminate the most important scientific topics of the day. Unique in popular science guides, Essential Science uses bright, full-color images to make traditionally "difficult" subjects more accessible. Each title focuses on a scientific or technological topic that is currently provoking debate and is likely to have a widespread impact on our lives. Lively, readable text from top science writers ensures all readers - from 14+ schoolchildren to academics - gain a full understanding of the facts and related issues. Under the direction of renowned science writer John Gribbin, expert authors describe, in lively, jargon-free text, the principles and discoveries behind each subject, summarize what is currently known, and predict future issues and trends.