Father Tadeusz Pacholczyk is director of the National Catholic Bioethics Center in Philadelphia, Pa. In a talk he gave, he spoke about the position of the Catholic Church on embryonic stem-cell research. He affirmed that the Church is against embryonic stem-cell research (and rightly so) but that she supports adult stem-cell research. He also said whereas embryonic stem-cell research has not cured any diseases, adult stem-cell research has cured nearly 100.
Embryonic stem-cell research involves destroying emrbyos, which is killing a human being. However, adult stem-cells can be aquired from the nasal cavity, the hip and umbilical cord and does not involve killing.
Read this important article which highlights important facts about this matter at: http://www.catholic.org/international/international_story.php?id=21666