The destruction of human embryos...

"The destruction of human embryos, whether to acquire stem cells or for any other purpose, contradicts the purported intent of researchers, legislators and public health officials to promote human welfare. The Church does not hesitate to approve and encourage somatic stem-cell research: not only because of the favorable results obtained through these alternative methods, but more importantly because they harmonize with the aforementioned intent by respecting the life of the human being at every stage of his or her existence."
~ Pope Benedict XVI, 10/11/07 ~