Engineering geology - A fifty year perspective

Recently, the Journal, Engineering Geology, celebrated its 50th anniversary. Engineering Geology (referred to hereinafter as "the Journal") was founded in 1965 with the inaugural issue published in August of that year. More than 3400 papers have been published in the Journal since then. To help celebrate the 50th anniversary of the Journal, a virtual special issue (VSI) that consists of thirty selected papers was published in 2015 (http://www.journals.elsevier.com/engineeringgeology/). These papers were selected by the two Chief Editors, Carlos Carranza-Torres and Charng Hsein Juang, with the assistance from the publisher, Kate Hibbert. The selection criteria included citations, the balance of the subjects, and contributions of individuals to the Journal. The preface of the VSIwaswritten by CharngHsein Juang with contributions from selected members of the Editorial Board of the Journal. This short communication, an enlarged version of the preface of the VSI, aims to summarize the history of the Journal, to discuss the future challenges faced by the engineering geology communities, and to provide new horizons for the young practitioners and researchers in this field.