Bipolar disorder has long been a puzzle for doctors and scientists. It runs strongly in families yet there is no single gene to blame. It effects 200 million people worldwide yet treatments is like shooting darts at a blackboard blindfolded hoping to hit a target. Promising new stem cell research shows specific differences in how the bipolar brain works and these differences could lead to better treatments down the road. One of the most exciting things about this research is HOW they did it. This amazing stem cell research could lead to further research in other disorders that effect the brain.