This book provides a theoretical and practical exploration of the constitutional bar against cruel and unusual punishments, excessive bail, and excessive fines. It explores the history of this prohibition, the current legal doctrine, and future applications of the Eighth Amendment. With contributions from the leading academics and experts on the Eighth Amendment and the wide range of punishments and criminal justice actors it touches, this volume addresses constitutional theory, legal history, federalism, constitutional values, the applicable legal doctrine, punishment theory, prison conditions, bail, fines, the death penalty, juvenile life without parole, execution methods, prosecutorial misconduct, race discrimination, and law & science.