Discovery awaits at the 2025 PRI Expo in Research Park! Join us for this free, family-friendly event, where visitors of all ages can immerse themselves in science and technology with over 50 STEM exhibits, demonstrations, and hands-on activities.

During the Expo, PRI scientists and staff will offer visitors a glimpse of the fascinating subjects they study every day — natural history, archaeology, hydrology and water, weather and climate, pollution prevention, and sustainable energy. From digging for fossils to learning about Illinois’ birds and bugs, there will be something for everyone to enjoy!