Merrimack College’s School of Science and Engineering and the Boston Society of Civil Engineers will host New England ThinkFest, a hands-on festival celebrating STEM, on Saturday, October 25, 10AM-2PM at a new location:  the gymnasium of North Andover Middle School.  There will be hands-on challenges, math puzzles, science experiments, and projects to design cars, wind sail rafts, water dams, and balloon towers.  Register at the door or by email to Jean Reynolds at reynoldsj@merrimack.edu.