Book excerpt: Originally conceived as a technical manual, but now offering the reader so much more, this timely work deals with various aspects of geohazards – surely an area of growing importance in this world of global warming. Using photogeology and remote sensing, Quebecois researcher Rivard’s work is unique in that the succinct text supports the illustrations, and is devised as a quick-reference, standardized presentation of 170 globally occurring photo-geomorphological units.