At least one moral controversy is put to rest

Even if political activists who have a stake in embryonic stem cell research want to continue arguing about their need, they can’t manufacture credibility.

Charles Krauthammer’s commentary is an excellent explanation of the reason why.

“If human embryonic stem cell research does not make you at least a little bit uncomfortable, you have not thought about it enough.” — James A. Thomson

A decade ago, Thomson was the first to isolate human embryonic stem cells. Last week, he (and Japan’s Shinya Yamanaka) announced one of the great scientific breakthroughs since the discovery of DNA: an embryo-free way to produce genetically matched stem cells.

Even a scientist who cares not a whit about the morality of embryo destruction will adopt this technique because it is so simple and powerful. The embryonic-stem-cell debate is over.

This was a stunning announcement of a seemingly miraculous discovery.

That Holy Grail has now been achieved. Largely because of the genius of Thomson and Yamanaka. And also because of the astonishing good fortune that nature requires only four injected genes to turn an ordinary adult skin cell into a magical stem cell that can become bone or brain or heart or liver.

But for one more reason as well. Because the moral disquiet that James Thomson always felt — and that George Bush forced the country to confront — helped lead him and others to find some ethically neutral way to produce stem cells. Providence then saw to it that the technique be so elegant and beautiful that scientific reasons alone will now incline even the most willful researchers to leave the human embryo alone.