Last month, we were invited by the Green Meetings Industry Council (GMIC)  to take a behind-the-scenes tour of the Greenbuild 2013 Conference and Expo at the Pennsylvania Convention Center (PACC). We walked the show floor and back-of-house areas with staff from the PACC, exhibit services provider Freeman, show producer US Green Building Council (USGBC) and Hanley Wood, which manages the …