The NASA Academy of Program/Project and Engineering Leadership, in partnership with MWH Global, brought together knowledge experts from NASA, industry, and academia for the Academys fourth NASA Knowledge Forum in April 2011. MWH Global hosted the event in Broomfield, Colorado. In the spirit of the philosophy that the practitioner knows best, the group of participants shared stories and ideas about the challenges and successes of using knowledge in projects. As projects become more globally distributed, there is an increasing demand for organizations to enable their workforces to learn and transfer valuable knowledge effectively. In addition to NASA and MWH Global, representatives from organizations including CH2M Hill, Common Knowledge Associates, the Educational Testing Service, Encana Natural Gas, Greenes Consulting, International Program Management Association, McDermott Consulting, Orbital RPM Consulting, Revolution Advisors, Riverside Technologies, and Working Knowledge gathered to explore effective learning in organizations as well as to exchange stories, research, ideas, and experiences.