Lee Silver
* Professor, Genetics
* Princeton University
* Author, Re-Making Eden: Cloning and Beyond in a Brave, New World (Avon Books, 1998)
* Princeton, New Jersey

Stuart A. Newman
* Board Member, Council for Responsible Genetics
* Professor, Cell Biology and Anatomy
* New York Medical College
* Valhala, New York

Gerald Schatten
* Director, Pittsburgh Development Center of Magee-Womens Research Institute
* Professor, Obstetrics, Gynecology, and Reproductive Sciences; Cell Biology and Physiology
* University of Pittsburgh School of Medicine
* Pittsburgh, Pennsylvania

Earlier this week a Massachusetts company announced that it had cloned a human embryo. In this hour, we'll look at the science behind the announcement. Is it really a breakthrough, or just an incremental step? How close are scientists to reliably and easily cloning a human? And how does this announcement change the debate over a complete ban on human cloning?

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