Key Features: Picture narrative combined with text narrative creates a storyboard sequence that can be read from start to finish, browsed, or used for reference. Eyewitness accounts put the reader in the shoes of those who experienced at first-hand such phenomena as Krakatau erupting, the discover of the first T-rex, or the first flight to break the sound barrier. Galleries of collections - from volcanic projectiles to tomb treasures - provide a visual feast that will help the reader relate the topic to the real world. For handy reference, a glossary at the bottom of each page explains technical terms in context, and cross-references point reader to related features on other pages.