Excellent, brief, argument by a leading neuroscientist, as to why embryos (let alone cloned embryos) are no longer required for Stem Cell Science:
Link: http://www.stemcellresearch.org/commentary/answeringcommonclaims.htm
Does Research Really Need Human Embryos and Cloning?
by Dr. Maureen L. Condic
April 16th 2009.
Neurobiologist Maureen L. Condic investigates 11 common arguments in favor of embryonic stem-cell research, and explains why science may not need the controversial technique, after all.