Science and technology lovers young and old packed Wellesley High on Saturday for WEF’s Wellesley STEM Expo, a fantastic event featuring dozens of hands-on exhibits and workshops, plus a talk by an MIT professor and a discussion of studying and working in STEM beyond high school.

Below, we took a spin through the Expo via Facebook Live:

The event also included recognition of Sustainability Challenge winners: Allison Chung; Audrey Johannes; Clarissa Ko; Max Goldenson; Nalini Fiorillo; Noa Helmbrecht; Olivia Caiazzo; Alexa Peak, Dylan Peak; Arabella Hardgrave; Kate Cooney; Jaron Jacobs; Tom Burton; and Jason Cannistraro.

The town is working to increase its national ranking for voluntary renewable energy through the Power To Choose Program — and make its lower carbon footprint goal — so this year’s Sustainability Challenge asked students: “How might renewable energy (solar, wind, hydro, etc.) impact your life and the environment in the future?” Students from every school across the district in grades 2-8 submitted entries including poems, diagrams, 3-D models, songs, videos, essays and more.