This book contains accounts of state-of-the art approaches to the physics of granular matter, from a widely interdisciplinary and international set of experts in the field. The authors include theorists such as S F Edwards, J Krug and J Kurchan; the book is also unique in reporting current experimental approaches with, importantly, a detailed account of new techniques. It will serve as an invaluable handbook for all researchers, both novice and experienced, who wish to get quickly directed to open questions in key aspects of this challenging and topical domain. Contents: Models of Free Cooling Granular Gases (U M B Marconi et al.); The Steady State of the Tapped Ising Model (D S Dean & A Lefevre); Coarsening of Vortex Ripples in Sand (J Krug); Dense Granular Media as Athermal Glasses (J Kurchan); Liquid-Solid Transition in Bidisperse Granulates (S Luding); Surface Granular Flows: Two Related Examples (D V Khakhar et al.); Glassy States in a Shaken Sandbox (P F Stadler et al.); Granular Media as a Physics Problem (S F Edwards & D V Grinev); Nonlinear Elasticity and Thermodynamics of Granular Materials (H A Makse); Granular Flow Studies by NMR: A Chronology (E Fukushima); Random Multiplicative Response Functions in Granular Contact Networks (C F Moukarzel); and other papers. Readership: Students, researchers, academics and scientists working in industry.