Earth Day will be celebrated April 18 from 11 a.m. to 5 p.m. at Old Mill Park, featuring a full day of environmental education, activities, vendors, and family-friendly fun. Callie Brown and Courtney Mersiowsky preview the event, highlighting opportunities to learn about sustainability and conservation. Only handicapped parking at Old Mill Park, with a free shuttle service running from the satellite lot at Germania and Charles streets to the festival entrance.   earthdayfred.com