This book provides new research on Chaos Theory. Chapter One begins with a discussion on the applications of Chaos Theory to financial statements. Chapter Two describes how the Chaos Theory of Careers developed out of discontent with previous career development theories and how fundamental concepts such as non-linearity, emergence, systems thinking, attraction, unplanned change, could be applied to work and career development to produce new insights for theory, research, assessment and counseling in the field. Chapter Three examines the application of Chaos Theory to ventricular wall biomechanics. Chapter Four numerically investigates a model of a diffusively coupled ring of cells. Chapter Five reveals the escape properties of orbits in a dynamical system of a two-dimensional perturbed harmonic oscillator, which is a characteristic example of open Hamiltonian systems.