Author and educator Sandy Murphy figures the best way to reach kids' minds is through their laughter. In her interactive puppet show, whimsical aquatic characters explain concerns about cyanobacteria in Lake Champlain and the need to control runoff. An audience of all ages gathers on the beach at Grand Isle State Park to learn about the role humans can play in protecting the fragile watershed. Murphy, who lives in Underhill, also signs copies of the illustrated children’s book she cowrote, Our Scrumptious Lake PHYTOTASTIC!