Ian Wilmut - lead scientist in the team to clone Dolly, the sheep
An excellent general introduction to the complex subject of cloning
Jane Maienschein - Director, Center for Biology and Society, Arizona State University, and author of 'Whose View of Life? Embryos, Cloning, and Stem Cells'
Brings together the scientific, ethical, policy, and potential applications of cloning research in a clear and highly readable discussion