Grow Your Own Pacemakerhttp://www.slate.com/blogs/blogs/humannature/archive/2008/04/17/grow-your-own-pacemaker.aspxAnother good story from this morning's batch : Ivan Oransky of the Wall Street Journal writes about the development of a " biological pacemaker ." He focuses on the work of researchers Ira Cohen and Michael Rosen: By inserting genes into rat heart cellsenCommunityServer 2.1 SP2 (Build: 61129.2)