What should one do before a major earthquake? The Andalusian Institute of Geophysics has published some basic suggestions on how to protect oneself from earthquakes. This site contains some regionalisms from Spain. Site in Spanish.
This site, created by Alberto Estrada, is an online research project for teachers and students who wish to study volcanoes on Earth and even on Mars! It also links to other web sites where you can find valuable information about volcanoes. Site in Spanish and English.