Human beings may have roamed the Earth for over 315,000 years — a mere blip in geological terms, but one with far-reaching consequences: wherever people have ventured, they’ve left behind permanent traces of their presence. In fact, we’ve changed the Earth itself. The distinguished Cambridge historian Sir Christopher Clark takes us on the ultimate world tour of man-made masterpieces, cultural achievements, and miracles of nature from the Seven Wonders of the Ancient World to over a thousand sit...