An interview with Barry Greene, the President and C.O.O. of Alnylam Pharmaceuticals, a bio-pharma company pioneering the development of RNAi therapeutics. Alnylam attracts world-class scientists, who want to be on the cutting edge of research, to its headquarters in Cambridge, Massachusetts, where they discover an uncompromising culture of leadership and teamwork. Barry talks to us about how Alnylam insists on excellence and turns scientists into team players.     15 minutes