Presented by the Cathedral Area Community Association, the theme of this annual environmental fair and trade show is Changing the World Starts At Home.

During the course of the event, which goes tonight at the Italian Club from 5-9 p.m., three seminars will be presented. They include: Building Smart Not Big with Eric de Waal of Walnut Construction; Housing Science 101 – Energy Efficient Home Retrofits and Grant Programs with Jason Brecker of Sun Ridge Residential; and Sustainability for Beginners with Rick Morrell of Eat Healthy Foods.

Admission to the trade show is free. For more information call 569-8755.