The European Researchers’ Night comes back, simultaneously all around Europe, on September 29. It is a big event promoted by the European Commission to show the researchers’ work in an informal and fun context. Piedmont and Aosta Valley host the twelfth edition of the event thanks to the two-year project CLoSER- Cementing Links between Science&society toward Engagement and Responsibility, which in 2016 passed the selection carried out by the European Commission within the Framework Programme for Research and Innovation Horizont 2020. The complete program can be found at the following link: