The original idea was for a small workshop for researchers involved in the observations for the 2011 delta Sco periastron campaign, but it grew into a conference that drew scientists from around the world and generated 56 papers for the proceedings. They cover observations and theory of circumstellar disks and outflows delta Sco and Be stars as laboratories for circumstellar disk physics, the dynamics of circumstellar material and tidal interactions, massive star formation out of a dynamic environment, and magnetospheres of hot stars. Only authors are indexed. Annotation ©2013 Book News, Inc., Portland, OR (booknews.com)