Worcester Polytechnic Institute and WGBH will present Touch Tomorrow — a free festival of science, technology, and robots — on Saturday, April 2, 10AM-4PM at Polar Park (100 Madison Ave., Worcester). It’s family-friendly, fun, free, and open to all ages — with a particular focus on what’s interesting for middle- and high-school students. Programming includes hands-on activities, exhibits by WPI and others, and an Innovation Showcase. Proof of vaccination or negative Covid test is required. Register here.