The most profound dilemma in assisted reproduction to date is the inability to recognize potentially viable embryos before their replacement into the reproductive tract. Application of increasingly advanced new technology has allowed the field of embryo evaluation to evolve rapidly and dramatically over the past five years. Leaders in the field of assisted reproduction to discuss their visions of dealing with the topic of embryo selection in the light of the limitations involving the fragility of the early human embryo. The purpose of this book is to shed light on the ever-expanding techniques that are being employed and evaluated with regard to embryo selection. A comprehensive overview may guide the ART practitioner in choice of techniques and evaluation of benefits and drawbacks.