"How has the world changed over the last two millennia? As we enter the third millennium, it's time to look back on 2,000 years of human achievement. What have we achieved? How have we changed? And how have the great events and inventions of history changed us. Norris McWhirter, creator of "The Guinness World Book of Records", and the world's acknowledged expert on records of every kind, is the ideal person to answer these questions. He has spent forty years researching the material in this marvelous book, tracing human progress from the wheel to deep space probes, from hunter-gathering to microwave meals."