Seeing Double: Errors In Stem-Cell Cloning Paper Raise Doubts

Scientists report a major breakthrough in human stem-cell research. And then just a week later, the findings come under fire.

http://www.npr.org/blogs/health/2013/05/23/186246916/seeing-double-errors-in-stem-cell-cloning-paper-raise-doubts?ft=1&f=1128