Mexico earthquake: Why did only some buildings collapse? - BBC News
| BBC News | Mexico earthquake: Why did only some buildings collapse? BBC News After Mexico's 7.1-magnitude quake, some buildings have collapsed while others, often right next door, remain standing. Why? Mexico City was built on ancient waterways. The first factor is that the soil is not the same in every place underneath Mexico ... Are the two Mexican earthquakes connected – and are more on the way? 226 dead after 7.1 magnitude earthquake in Mexico on Tuesday Search for survivors after more than 200 killed in Mexican earthquake |