Stop any doctor or scientist in the hallways of Massachusetts General Hospital and its maze of laboratories and they will tell you: their bright ideas are virtually worthless without an environment that fosters them. Indeed, clinical innovations and research discoveries cannot emerge in a vacuum. So how is it, exactly, that Mass General has become a hotbed of new research discoveries, from breakthroughs in cancer detection to stem cells? How do its clinicians continue to find new and better ways to treat patients? Usher new devices into care?