Mexican man light candles during an earthquake anniversary mass at Tlaltelolco apartment complex.
A Mexican man light candles during an earthquake anniversary mass at Tlaltelolco apartment complex in Mexico City, September 19, 2005.The devastating aftermath of Hurricane Katrina has stirred up memories of an earthquake that reduced parts of Mexico City to rubble 20 years ago, but the capital has armed itself for the next time disaster hits. The earthquake, measuring a giddy 8.1 on the Richter scale, caught Mexico off guard, killing thousands as it toppled housing blocks and office buildings in a city built on the soft mud left by a dried-up pre-Hispanic lake. Mexico's President Vicente Fox will host a memorial service on Monday for the victims. REUTERS/Daniel Aguilar DA/VP