The site is now in multiple languages. There is a language switcher at the bottom of the page (and in the menu area) if the language is available for that page. Spanish is the most complete thanks to the diligent efforts of Pablo Guimera Coll and Prof. Mariana Bertoni at the Defect Lab at ASU (https://defectlab.engineering.asu.edu/) at Arizona State University. They took on the huge task of translation into technical Spanish. Korean is slowly being posted but for now it is available as a PDF.