Should we experiment on human embryos? Should we use them, or tissue from them, for therapeutic or research programmes? These are perenially interesting and controversial questions, and the debate around them ranges from visions of new Frankenstein's monsters and grotesque hybrids on the one hand, to the possibility of cures for diseases like AIDS and cancer on the other. While the debate continues, it is vital that decisions are made on the basis of the best available evidence and argument. This book provides both, from the most authoritative sources. The contributors cover the scientific, legal, ethical, theological, historical, and public policy dimensions of human embryo research and experimentation. The cases for and against are put strongly and clearly, and the scientific evidence is cogently presented by leading figures in embryology, including Professor Robert Edwards, one of the pioneers of the in vitro fertilization technique.