<p>From today’s Boston Globe:</p>
<p>Of the thousands of cities flooded, burned, leveled by earthquakes, or otherwise destroyed over the last 3,000 years, all but a few have been rebuilt - sometimes stronger and safer, and sometimes not.</p>
<p>Chicago 1871 - The Great Fire destroyed 18,000 buildings and left 100,000 people - more than a third of the population - homeless. Despite the vast devastation, the city was substantially rebuilt in two years - in less flammable brick and stone.</p>
<p>San Francisco 1906 - A massive earthquake obliterated 28,000 buildings and left half the population of 400,000 without shelter. Civic leaders, insisting that the quake had actually made the region safer, rushed to rebuild. But state building codes were not substantially altered until several decades later, after a devastating quake in southern California.</p>