Two-Time Physics: The Unified View from Higher Dimensional Space and Time.- A First Look at the Known Universe.- Structure of Matter and Fundamental Forces.- What Is Space-Time?.- Symmetry and Perspective.- Why Higher Space or Time Dimensions?.- The Role of Extra Space Dimensions in String Theory.- Two-Time Physics.- Evidence of 4 + 2 as Subtle Effects in 3 + 1 Dimensions.- Fundamental Universe as a Shadow from 4 + 2 Dimensions.- Current Status of...