Stem Cell research has often been at the front of the minds of people.  One person could think it's absolutely fantastic, another could think it makes for pointless destruction of human life.  Luckily, this article gives relatively unbiased information on the subject.
First off, stem cells come from 3 main sources: adult bone marrow, an umbilical cord, or blastocysts (embryos).  These cells can then be used and manipulated to fix a few problems in the human body.  Osteroperosis (how do you even spell that?) would be an obvious one as the stem cells could replace the deterioration in the joints.
It touches on the controversial issues of stem cells, too.  Here, it begins to lean way over onto the supporting side of the research.  The entire time, stem cells are put in a positive light pointing toward the use of stem cells for a more medically advanced future.  I don't completely agree with this point of view, as I think that the issues should be brought to light and stem cells put under some skepticism just in case of a medical downfall that may or may not be caused by such an up-and-coming technique.  It presents many pros, too, don't get me wrong.  But I think that the article is much too focused on the pros.