Interestingly, All Things Considered just this evening had a segment on attempts at cloning human embryos, with a very brief discussion of moral, scientific, and political ramifications of the practice, and a comparison of the analogous evolution of in-vitro fertilization (IVF) twenty or so years ago. Can't give you a URL yet because the show is still airing but by tomorrow May 7 it ought to be available through www.npr.org/programs (or even after 10PM EDT tonight).