WALTHAM — Jonathan Gonzalez, 12, was one of the first to hammer nails into the wooden frame of the raised vegetable bed outside McDevitt Middle School.Soon to be seventh-grader, Gonzales was named "eco-leader" of Friday's Mall Mania and Healthy Waltham summer program that involves about 20 other sixth- and seventh-graders from the city's two middle schools. Read more:
