Growing mini-brains from stem cells

We've seen beating heart tissue, windpipes and bladders all grown from stem cells.

http://www.cnn.com/2013/08/28/health/stem-cell-brain/index.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+rss%2Fcnn_health+%28RSS%3A+Health%29