For those of you who haven't yet read Chip Maxwell's informative, persuasive (and feisty) treatment of the embryonic stem cell controversy, I drop again the hint to do so soon.
Chip is a communicator of the first rank with experience as a State Senator, County Commissioner, radio host and remarkable leadership of the Nebraska Coalition for Ethical Research. You'll find his book extremely helpful not only in breaking down the various aspects of the controversy for your own understanding, but also in learning how to effectively present the case for morally-responsible scientific research to others.
It really is the best thing out there.
Check with Chip on Stem Cell Research is available right here for only a ten spot. You can't beat that.