Stem cell research is a controversial issue. The story of Chloe Levin, who was born prematurely with cerebral palsy and later received stem cell treatment that improved her condition, illustrates the potential benefits of stem cell therapy. However, there are still scientific and ethical questions surrounding stem cell research that prevent it from being more widely used. While individual stories provide hope, a full understanding of the scientific issues is needed to form an opinion on the debate over stem cell research.