A big milestone for BioGenerator, an organization which grooms the next generation of St. Louis science companies. It's often the the first dollar in, with hopes of attracting other investors to follow. Those follow-on dollars have just crossed $2.5 billion. Charlie Bolton and Maggie Crane explain. Stereotaxis CEO David Fischel talks about their new downtown headquarters. Michael and Travis discuss Brookings' latest rundown of U.S. tech cities.