The Proteus Effect: Stem Cells and Their Promise for Medicine

Many scientists believe that stem cells could be the pathway to discovering regenerative cures to a wide range of diseases, including Alzheimer's, Parkinson's, diabetes, and heart disease. Today on Focus, we're joined by science journalist Ann Parson to discuss what stem cells are, where they come from, and the ethical issues that may prevent the field from ever really taking off.

Guest: Ann B. Parson (acknowledged science journalist; author of The Proteus Effect: Stem Cells and Their Promise for Medicine)