<p><b>From the bestselling author of <i>Everything Bad is Good For You</i>, Steven Johnson''s <i>The Ghost Map </i>vividly recreates Victorian London to show how huge populations live together, how cities can kill - and how they can save us.</b><br><br> Steven Johnson is one of today''s most exciting writers about popular culture, urban living and new technology. In <i>The Ghost Map</i> he tells the story of the terrifying cholera epidemic that engulfed London in 1854, and the two unlikely heroes - anesthetist Doctor John Snow and affable clergyman Reverend Henry Whitehead - who defeated the disease through a combination of local knowledge, scientific research and map-making.<br><br> In telling their extraordinary story, Steven Johnson also explores a whole world of ideas and connections, from urban terror to microbes, ecosystems to the Great Stink, cultural phenomena to street life.<br><br> ''A wonderful book''<br/> <i>Mail on Sunday</i><br><br> ''A thumping page-turner''<